Pennsylvania · drinking water · SDWIS through latest publish

East Donegal Water Quality — Columbia, Pennsylvania

PWSID PA7360083 · GroundwaterMunicipal

4,048 people served. No health-based SDWIS violations recorded in the past 5 years. Last cited 1 year ago.

ALL SDWIS VIOLATIONS · 20202026 (annual count)
Bar chart of annual values from 2020 to 2026, in violations. Most recent year (2026): 0 violations.153 violations'20'21'22'23'24'25'260 violations
Anomaly engine

Active signals

No SDWIS health-based or unresolved violations on the record. Contaminant detail and equity context below.

Most-cited contaminants

What This Utility Gets Cited For

  • Chlorine18 citations
  • Haloacetic Acids (HAA5)16 citations
  • Contaminant 800012 citations
  • Total Trihalomethanes (TTHM)8 citations
  • Contaminant 75008 citations
  • Arsenic6 citations
Violation history

What's On The SDWIS Record

Health-based violations exceed an MCL or treatment-technique standard. Monitoring violations are reporting failures with no measured exceedance — they tell you the system isn't fully transparent, not that the water is unsafe today.

MONITORING · CHLORINE

2025 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

MONITORING · TOTAL TRIHALOMETHANES (TTHM)

2024 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2950

MONITORING · TOTAL TRIHALOMETHANES (TTHM)

2024 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2950

MONITORING · TOTAL TRIHALOMETHANES (TTHM)

2024 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2950

MONITORING · CHLORINE

2022 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

MONITORING · CHLORINE

2022 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

MONITORING · CHLORINE

2022 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

MONITORING · CHLORINE

2022 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

MONITORING · CHLORINE

2022 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

MONITORING · CHLORINE

2022 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

MONITORING · CHLORINE

2022 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

MONITORING · CHLORINE

2022 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

MONITORING · CHLORINE

2022 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

OTHER · CONTAMINANT 7500

2021 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER; returned to compliance

CONTAMINANT CODE 7500

OTHER · CONTAMINANT 7500

2021 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER; returned to compliance

CONTAMINANT CODE 7500

OTHER · CONTAMINANT 7500

2021 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER; returned to compliance

CONTAMINANT CODE 7500

OTHER · CONTAMINANT 7500

2021 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER; returned to compliance

CONTAMINANT CODE 7500

OTHER · CONTAMINANT 7500

2021 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER; returned to compliance

CONTAMINANT CODE 7500

OTHER · CONTAMINANT 7500

2021 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER; returned to compliance

CONTAMINANT CODE 7500

OTHER · CONTAMINANT 7500

2021 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER; returned to compliance

CONTAMINANT CODE 7500

OTHER · CONTAMINANT 7500

2021 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER; returned to compliance

CONTAMINANT CODE 7500

MONITORING · HALOACETIC ACIDS (HAA5)

2021 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2456

MONITORING · HALOACETIC ACIDS (HAA5)

2021 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2456

MONITORING · HALOACETIC ACIDS (HAA5)

2021 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2456

MONITORING · HALOACETIC ACIDS (HAA5)

2021 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2456

MONITORING · HALOACETIC ACIDS (HAA5)

2021 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2456

MONITORING · HALOACETIC ACIDS (HAA5)

2021 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2456

MONITORING · HALOACETIC ACIDS (HAA5)

2021 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2456

MONITORING · HALOACETIC ACIDS (HAA5)

2021 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2456

MONITORING · HALOACETIC ACIDS (HAA5)

2021 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2456

MONITORING · HALOACETIC ACIDS (HAA5)

2021 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2456

MONITORING · CHLORINE

2021 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

MONITORING · CHLORINE

2021 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

MONITORING · CHLORINE

2021 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

MONITORING · CHLORINE

2021 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

MONITORING · HALOACETIC ACIDS (HAA5)

2021 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2456

MONITORING · HALOACETIC ACIDS (HAA5)

2021 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2456

MONITORING · HALOACETIC ACIDS (HAA5)

2021 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2456

MONITORING · HALOACETIC ACIDS (HAA5)

2021 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2456

MONITORING · HALOACETIC ACIDS (HAA5)

2021 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2456

MONITORING · HALOACETIC ACIDS (HAA5)

2021 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2456

MONITORING · CONTAMINANT 8000

2021 · Contaminant 8000 · Revised Total Coliform Rule

Reporting failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000

2021 · Contaminant 8000 · Revised Total Coliform Rule

Reporting failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000

2021 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000

2021 · Contaminant 8000 · Revised Total Coliform Rule

Reporting failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CHLORINE

2021 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

MONITORING · CHLORINE

2021 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

MONITORING · CHLORINE

2021 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

MONITORING · CHLORINE

2021 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

MONITORING · ARSENIC

2021 · Arsenic · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1005

MONITORING · ARSENIC

2021 · Arsenic · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1005

MONITORING · ARSENIC

2021 · Arsenic · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1005

MONITORING · ARSENIC

2021 · Arsenic · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1005

MONITORING · ARSENIC

2021 · Arsenic · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1005

MONITORING · ARSENIC

2021 · Arsenic · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1005

MONITORING · BARIUM

2021 · Barium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1010

MONITORING · BARIUM

2021 · Barium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1010

MONITORING · BARIUM

2021 · Barium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1010

MONITORING · BARIUM

2021 · Barium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1010

MONITORING · BARIUM

2021 · Barium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1010

MONITORING · BARIUM

2021 · Barium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1010

MONITORING · CADMIUM

2021 · Cadmium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1015

MONITORING · CADMIUM

2021 · Cadmium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1015

MONITORING · CADMIUM

2021 · Cadmium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1015

MONITORING · CADMIUM

2021 · Cadmium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1015

MONITORING · CADMIUM

2021 · Cadmium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1015

MONITORING · CADMIUM

2021 · Cadmium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1015

MONITORING · CHROMIUM

2021 · Chromium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1020

MONITORING · CHROMIUM

2021 · Chromium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1020

MONITORING · CHROMIUM

2021 · Chromium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1020

MONITORING · CHROMIUM

2021 · Chromium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1020

MONITORING · CHROMIUM

2021 · Chromium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1020

MONITORING · CHROMIUM

2021 · Chromium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1020

MONITORING · FLUORIDE

2021 · Fluoride · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1024

MONITORING · FLUORIDE

2021 · Fluoride · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1024

MONITORING · FLUORIDE

2021 · Fluoride · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1024

MONITORING · FLUORIDE

2021 · Fluoride · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1024

MONITORING · FLUORIDE

2021 · Fluoride · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1024

MONITORING · FLUORIDE

2021 · Fluoride · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1024

MONITORING · MERCURY (INORGANIC)

2021 · Mercury (inorganic) · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1025

MONITORING · MERCURY (INORGANIC)

2021 · Mercury (inorganic) · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1025

MONITORING · MERCURY (INORGANIC)

2021 · Mercury (inorganic) · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1025

MONITORING · MERCURY (INORGANIC)

2021 · Mercury (inorganic) · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1025

MONITORING · MERCURY (INORGANIC)

2021 · Mercury (inorganic) · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1025

MONITORING · MERCURY (INORGANIC)

2021 · Mercury (inorganic) · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1025

MONITORING · SELENIUM

2021 · Selenium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1035

MONITORING · SELENIUM

2021 · Selenium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1035

MONITORING · SELENIUM

2021 · Selenium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1035

MONITORING · SELENIUM

2021 · Selenium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1035

MONITORING · SELENIUM

2021 · Selenium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1035

MONITORING · SELENIUM

2021 · Selenium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1035

MONITORING · CONTAMINANT 1036

2021 · Contaminant 1036 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1036

MONITORING · CONTAMINANT 1036

2021 · Contaminant 1036 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1036

MONITORING · CONTAMINANT 1036

2021 · Contaminant 1036 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1036

MONITORING · CONTAMINANT 1036

2021 · Contaminant 1036 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1036

MONITORING · CONTAMINANT 1036

2021 · Contaminant 1036 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1036

MONITORING · CONTAMINANT 1036

2021 · Contaminant 1036 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1036

MONITORING · ASBESTOS

2021 · Asbestos · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1045

MONITORING · ASBESTOS

2021 · Asbestos · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1045

MONITORING · ASBESTOS

2021 · Asbestos · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1045

MONITORING · ASBESTOS

2021 · Asbestos · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1045

MONITORING · ASBESTOS

2021 · Asbestos · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1045

MONITORING · ASBESTOS

2021 · Asbestos · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1045

MONITORING · CONTAMINANT 1074

2021 · Contaminant 1074 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1074

MONITORING · CONTAMINANT 1074

2021 · Contaminant 1074 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1074

MONITORING · CONTAMINANT 1074

2021 · Contaminant 1074 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1074

MONITORING · CONTAMINANT 1074

2021 · Contaminant 1074 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1074

MONITORING · CONTAMINANT 1074

2021 · Contaminant 1074 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1074

MONITORING · CONTAMINANT 1074

2021 · Contaminant 1074 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1074

MONITORING · CONTAMINANT 1075

2021 · Contaminant 1075 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1075

MONITORING · CONTAMINANT 1075

2021 · Contaminant 1075 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1075

MONITORING · CONTAMINANT 1075

2021 · Contaminant 1075 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1075

MONITORING · CONTAMINANT 1075

2021 · Contaminant 1075 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1075

MONITORING · CONTAMINANT 1075

2021 · Contaminant 1075 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1075

MONITORING · CONTAMINANT 1075

2021 · Contaminant 1075 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1075

MONITORING · CONTAMINANT 1085

2021 · Contaminant 1085 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1085

MONITORING · CONTAMINANT 1085

2021 · Contaminant 1085 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1085

MONITORING · CONTAMINANT 1085

2021 · Contaminant 1085 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1085

MONITORING · CONTAMINANT 1085

2021 · Contaminant 1085 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1085

MONITORING · CONTAMINANT 1085

2021 · Contaminant 1085 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1085

MONITORING · CONTAMINANT 1085

2021 · Contaminant 1085 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1085

MONITORING · CONTAMINANT 4020

2021 · Contaminant 4020 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 4020

MONITORING · CONTAMINANT 4020

2021 · Contaminant 4020 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 4020

MONITORING · CONTAMINANT 4020

2021 · Contaminant 4020 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 4020

MONITORING · CONTAMINANT 4020

2021 · Contaminant 4020 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 4020

MONITORING · CONTAMINANT 4020

2021 · Contaminant 4020 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 4020

MONITORING · CONTAMINANT 4020

2021 · Contaminant 4020 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 4020

MONITORING · CONTAMINANT 4030

2021 · Contaminant 4030 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 4030

MONITORING · CONTAMINANT 4030

2021 · Contaminant 4030 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 4030

MONITORING · CONTAMINANT 4030

2021 · Contaminant 4030 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 4030

MONITORING · CONTAMINANT 4030

2021 · Contaminant 4030 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 4030

MONITORING · CONTAMINANT 4030

2021 · Contaminant 4030 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 4030

MONITORING · CONTAMINANT 4030

2021 · Contaminant 4030 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 4030

MONITORING · CONTAMINANT 8000

2020 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000

2020 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000

2020 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000

2020 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000

2020 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000

2020 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000

2020 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000

2020 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · TOTAL TRIHALOMETHANES (TTHM)

2020 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2950

MONITORING · TOTAL TRIHALOMETHANES (TTHM)

2020 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2950

MONITORING · TOTAL TRIHALOMETHANES (TTHM)

2020 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2950

MONITORING · TOTAL TRIHALOMETHANES (TTHM)

2020 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2950

MONITORING · TOTAL TRIHALOMETHANES (TTHM)

2020 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2950

MONITORING · ENDRIN

2020 · Endrin · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2005

MONITORING · ENDRIN

2020 · Endrin · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2005

MONITORING · ENDRIN

2020 · Endrin · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2005

MONITORING · ENDRIN

2020 · Endrin · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2005

MONITORING · ENDRIN

2020 · Endrin · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2005

MONITORING · LINDANE

2020 · Lindane · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2010

MONITORING · LINDANE

2020 · Lindane · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2010

MONITORING · LINDANE

2020 · Lindane · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2010

MONITORING · LINDANE

2020 · Lindane · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2010

MONITORING · LINDANE

2020 · Lindane · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2010

MONITORING · METHOXYCHLOR

2020 · Methoxychlor · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2015

MONITORING · METHOXYCHLOR

2020 · Methoxychlor · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2015

MONITORING · METHOXYCHLOR

2020 · Methoxychlor · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2015

MONITORING · METHOXYCHLOR

2020 · Methoxychlor · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2015

MONITORING · METHOXYCHLOR

2020 · Methoxychlor · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2015

MONITORING · TOXAPHENE

2020 · Toxaphene · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2020

MONITORING · TOXAPHENE

2020 · Toxaphene · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2020

MONITORING · TOXAPHENE

2020 · Toxaphene · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2020

MONITORING · TOXAPHENE

2020 · Toxaphene · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2020

MONITORING · TOXAPHENE

2020 · Toxaphene · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2020

MONITORING · CONTAMINANT 2031

2020 · Contaminant 2031 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2031

MONITORING · CONTAMINANT 2031

2020 · Contaminant 2031 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2031

MONITORING · CONTAMINANT 2031

2020 · Contaminant 2031 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2031

MONITORING · CONTAMINANT 2031

2020 · Contaminant 2031 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2031

MONITORING · CONTAMINANT 2031

2020 · Contaminant 2031 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2031

MONITORING · CONTAMINANT 2032

2020 · Contaminant 2032 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2032

MONITORING · CONTAMINANT 2032

2020 · Contaminant 2032 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2032

MONITORING · CONTAMINANT 2032

2020 · Contaminant 2032 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2032

MONITORING · CONTAMINANT 2032

2020 · Contaminant 2032 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2032

MONITORING · CONTAMINANT 2032

2020 · Contaminant 2032 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2032

MONITORING · CONTAMINANT 2033

2020 · Contaminant 2033 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2033

MONITORING · CONTAMINANT 2033

2020 · Contaminant 2033 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2033

MONITORING · CONTAMINANT 2033

2020 · Contaminant 2033 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2033

MONITORING · CONTAMINANT 2033

2020 · Contaminant 2033 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2033

MONITORING · CONTAMINANT 2033

2020 · Contaminant 2033 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2033

MONITORING · CONTAMINANT 2034

2020 · Contaminant 2034 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2034

MONITORING · CONTAMINANT 2034

2020 · Contaminant 2034 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2034

MONITORING · CONTAMINANT 2034

2020 · Contaminant 2034 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2034

MONITORING · CONTAMINANT 2034

2020 · Contaminant 2034 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2034

MONITORING · CONTAMINANT 2034

2020 · Contaminant 2034 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2034

MONITORING · CONTAMINANT 2035

2020 · Contaminant 2035 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2035

MONITORING · CONTAMINANT 2035

2020 · Contaminant 2035 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2035

MONITORING · CONTAMINANT 2035

2020 · Contaminant 2035 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2035

MONITORING · CONTAMINANT 2035

2020 · Contaminant 2035 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2035

MONITORING · CONTAMINANT 2035

2020 · Contaminant 2035 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2035

MONITORING · CONTAMINANT 2036

2020 · Contaminant 2036 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2036

MONITORING · CONTAMINANT 2036

2020 · Contaminant 2036 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2036

MONITORING · CONTAMINANT 2036

2020 · Contaminant 2036 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2036

MONITORING · CONTAMINANT 2036

2020 · Contaminant 2036 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2036

MONITORING · CONTAMINANT 2036

2020 · Contaminant 2036 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2036

MONITORING · CONTAMINANT 2037

2020 · Contaminant 2037 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2037

MONITORING · CONTAMINANT 2037

2020 · Contaminant 2037 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2037

MONITORING · CONTAMINANT 2037

2020 · Contaminant 2037 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2037

MONITORING · CONTAMINANT 2037

2020 · Contaminant 2037 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2037

MONITORING · CONTAMINANT 2037

2020 · Contaminant 2037 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2037

MONITORING · CONTAMINANT 2040

2020 · Contaminant 2040 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2040

MONITORING · CONTAMINANT 2040

2020 · Contaminant 2040 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2040

MONITORING · CONTAMINANT 2040

2020 · Contaminant 2040 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2040

MONITORING · CONTAMINANT 2040

2020 · Contaminant 2040 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2040

MONITORING · CONTAMINANT 2040

2020 · Contaminant 2040 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2040

MONITORING · CONTAMINANT 2041

2020 · Contaminant 2041 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2041

MONITORING · CONTAMINANT 2041

2020 · Contaminant 2041 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2041

MONITORING · CONTAMINANT 2041

2020 · Contaminant 2041 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2041

MONITORING · CONTAMINANT 2041

2020 · Contaminant 2041 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2041

MONITORING · CONTAMINANT 2041

2020 · Contaminant 2041 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2041

MONITORING · CONTAMINANT 2042

2020 · Contaminant 2042 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2042

MONITORING · CONTAMINANT 2042

2020 · Contaminant 2042 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2042

MONITORING · CONTAMINANT 2042

2020 · Contaminant 2042 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2042

MONITORING · CONTAMINANT 2042

2020 · Contaminant 2042 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2042

MONITORING · CONTAMINANT 2042

2020 · Contaminant 2042 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2042

MONITORING · CONTAMINANT 2046

2020 · Contaminant 2046 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2046

MONITORING · CONTAMINANT 2046

2020 · Contaminant 2046 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2046

MONITORING · CONTAMINANT 2046

2020 · Contaminant 2046 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2046

MONITORING · CONTAMINANT 2046

2020 · Contaminant 2046 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2046

MONITORING · CONTAMINANT 2046

2020 · Contaminant 2046 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2046

MONITORING · CONTAMINANT 2051

2020 · Contaminant 2051 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2051

MONITORING · CONTAMINANT 2051

2020 · Contaminant 2051 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2051

MONITORING · CONTAMINANT 2051

2020 · Contaminant 2051 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2051

MONITORING · CONTAMINANT 2051

2020 · Contaminant 2051 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2051

MONITORING · CONTAMINANT 2051

2020 · Contaminant 2051 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2051

MONITORING · CONTAMINANT 2063

2020 · Contaminant 2063 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2063

MONITORING · CONTAMINANT 2063

2020 · Contaminant 2063 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2063

MONITORING · CONTAMINANT 2063

2020 · Contaminant 2063 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2063

MONITORING · CONTAMINANT 2063

2020 · Contaminant 2063 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2063

MONITORING · CONTAMINANT 2063

2020 · Contaminant 2063 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2063

MONITORING · 2,4,5-TP (SILVEX)

2020 · 2,4,5-TP (Silvex) · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2065

MONITORING · 2,4,5-TP (SILVEX)

2020 · 2,4,5-TP (Silvex) · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2065

MONITORING · 2,4,5-TP (SILVEX)

2020 · 2,4,5-TP (Silvex) · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2065

MONITORING · 2,4,5-TP (SILVEX)

2020 · 2,4,5-TP (Silvex) · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2065

MONITORING · 2,4,5-TP (SILVEX)

2020 · 2,4,5-TP (Silvex) · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2065

MONITORING · CONTAMINANT 2067

2020 · Contaminant 2067 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2067

MONITORING · CONTAMINANT 2067

2020 · Contaminant 2067 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2067

MONITORING · CONTAMINANT 2067

2020 · Contaminant 2067 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2067

MONITORING · CONTAMINANT 2067

2020 · Contaminant 2067 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2067

MONITORING · CONTAMINANT 2067

2020 · Contaminant 2067 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2067

MONITORING · ALACHLOR

2020 · Alachlor · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2105

MONITORING · ALACHLOR

2020 · Alachlor · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2105

MONITORING · ALACHLOR

2020 · Alachlor · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2105

MONITORING · ALACHLOR

2020 · Alachlor · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2105

MONITORING · ALACHLOR

2020 · Alachlor · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2105

MONITORING · ATRAZINE

2020 · Atrazine · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2110

MONITORING · ATRAZINE

2020 · Atrazine · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2110

MONITORING · ATRAZINE

2020 · Atrazine · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2110

MONITORING · ATRAZINE

2020 · Atrazine · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2110

MONITORING · ATRAZINE

2020 · Atrazine · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2110

MONITORING · CONTAMINANT 2274

2020 · Contaminant 2274 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2274

MONITORING · CONTAMINANT 2274

2020 · Contaminant 2274 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2274

MONITORING · CONTAMINANT 2274

2020 · Contaminant 2274 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2274

MONITORING · CONTAMINANT 2274

2020 · Contaminant 2274 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2274

MONITORING · CONTAMINANT 2274

2020 · Contaminant 2274 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2274

MONITORING · CARBOFURAN

2020 · Carbofuran · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2306

MONITORING · CARBOFURAN

2020 · Carbofuran · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2306

MONITORING · CARBOFURAN

2020 · Carbofuran · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2306

MONITORING · CARBOFURAN

2020 · Carbofuran · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2306

MONITORING · CARBOFURAN

2020 · Carbofuran · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2306

MONITORING · CONTAMINANT 2326

2020 · Contaminant 2326 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2326

MONITORING · CONTAMINANT 2326

2020 · Contaminant 2326 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2326

MONITORING · CONTAMINANT 2326

2020 · Contaminant 2326 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2326

MONITORING · CONTAMINANT 2326

2020 · Contaminant 2326 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2326

MONITORING · CONTAMINANT 2326

2020 · Contaminant 2326 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2326

MONITORING · TRICHLOROETHYLENE (TCE)

2020 · Trichloroethylene (TCE) · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2383

MONITORING · TRICHLOROETHYLENE (TCE)

2020 · Trichloroethylene (TCE) · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2383

MONITORING · TRICHLOROETHYLENE (TCE)

2020 · Trichloroethylene (TCE) · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2383

MONITORING · TRICHLOROETHYLENE (TCE)

2020 · Trichloroethylene (TCE) · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2383

MONITORING · TRICHLOROETHYLENE (TCE)

2020 · Trichloroethylene (TCE) · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2383

MONITORING · CONTAMINANT 2931

2020 · Contaminant 2931 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2931

MONITORING · CONTAMINANT 2931

2020 · Contaminant 2931 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2931

MONITORING · CONTAMINANT 2931

2020 · Contaminant 2931 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2931

MONITORING · CONTAMINANT 2931

2020 · Contaminant 2931 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2931

MONITORING · CONTAMINANT 2931

2020 · Contaminant 2931 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2931

MONITORING · CONTAMINANT 2946

2020 · Contaminant 2946 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2946

MONITORING · CONTAMINANT 2946

2020 · Contaminant 2946 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2946

MONITORING · CONTAMINANT 2946

2020 · Contaminant 2946 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2946

MONITORING · CONTAMINANT 2946

2020 · Contaminant 2946 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2946

MONITORING · CONTAMINANT 2946

2020 · Contaminant 2946 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2946

MONITORING · CONTAMINANT 2959

2020 · Contaminant 2959 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2959

MONITORING · CONTAMINANT 2959

2020 · Contaminant 2959 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2959

MONITORING · CONTAMINANT 2959

2020 · Contaminant 2959 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2959

MONITORING · CONTAMINANT 2959

2020 · Contaminant 2959 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2959

MONITORING · CONTAMINANT 2959

2020 · Contaminant 2959 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2959

Equity context · ACS 2018-2022 · USEPA-clone EJ disparity

Who Drinks This Water

Columbia, Pennsylvania (Census place; block-group disparity scores aggregated by centroid containment): a service population of 10,203. Local disparity score for pm2.5 (fine particulate) sits near the reference (104). Why we surface this →

POPULATION SHARE
16.5%

Low-income

POPULATION SHARE
30.3%

People of color

POPULATION SHARE
4.7%

Under age 5

POPULATION SHARE
21.3%

Over age 64

NATIONAL PERCENTILE · vs all US block groups (population-weighted; ranked against the national EJScreen indicator distribution)

  • PM2.5 (fine particulate)Health riskFine inhalable particles 2.5 micrometers or smaller. They travel deep into the lungs and into the bloodstream — linked to asthma, heart disease, stroke, and premature death.76above the national median
  • OzoneHealth riskGround-level ozone (smog) inflames the airways. Even short exposures trigger asthma attacks and worsen chronic lung and heart disease.44near the national median
  • Nitrogen dioxide (NO₂)Health riskA tailpipe and combustion gas. Concentrates near busy roads and industrial sites; raises risk of airway inflammation, asthma, and lower respiratory infections in children.27below the national median
  • Diesel particulateHealth riskSoot from diesel engines (trucks, trains, ports, construction). EPA classifies it as a likely human carcinogen and a major driver of childhood asthma near freight corridors.57near the national median
  • Toxic releases (RSEI)Health riskEPA's Risk-Screening Environmental Indicators score — weights TRI chemical releases by toxicity, where they go, and how many people are nearby. Higher means greater modeled cancer and chronic-health risk.93in the highest 10% nationally
  • Traffic proximityHealth riskPopulation-weighted distance to high-volume roads. Living close to heavy traffic raises exposure to PM2.5, NO₂, and diesel exhaust — and the cardiovascular and asthma risks that follow.41near the national median
  • Lead-paint risk (pre-1960 housing)Health riskShare of housing built before 1960, when lead-based paint was common. Dust from deteriorating paint is the leading cause of childhood lead poisoning, which permanently impairs cognitive development.90in the highest 10% nationally
  • Superfund site proximityHealth riskPopulation-weighted distance to NPL Superfund sites — the most contaminated waste sites in the country. Nearby groundwater, soil, and air can carry industrial solvents, metals, and other long-lived contaminants.95in the highest 5% nationally
  • RMP-facility proximityHealth riskDistance to facilities holding chemicals at quantities large enough to require an EPA Risk Management Plan (refineries, fertilizer plants, etc.). These pose acute exposure risk during accidental releases.64above the national median
  • Hazardous-waste site proximityHealth riskDistance to RCRA hazardous-waste handlers (treatment, storage, disposal facilities). Indicates potential exposure to industrial chemicals in air, soil, and groundwater.62above the national median
  • Underground storage tanksHealth riskDensity of underground tanks (gasoline, heating oil, industrial fluids). Leaking tanks are a leading source of benzene and other volatile organic compounds in groundwater drinking-water supplies.80in the highest 20% nationally
  • NPDES wastewater proximityHealth riskDistance to permitted industrial wastewater dischargers. Closer proximity raises exposure to pollutants released into surface waters used for fishing, recreation, and downstream drinking-water intakes.82in the highest 20% nationally
  • Drinking-water non-complianceHealth riskEPA score for public water systems with health-based Safe Drinking Water Act violations. Higher means more residents on systems that recently exceeded safe limits for contaminants like lead, arsenic, or nitrate.76above the national median
EJ disparity scores · service-area block groups (100 = national reference; higher = greater disparate burden)
IndicatorDisparity scoreReading
PM2.5 (fine particulate)104near the reference
Ozone81below the reference
Nitrogen dioxide (NO₂)38well below the reference
Diesel particulate77below the reference
Toxic releases (RSEI)124moderately above the reference
Traffic proximity55below the reference
Lead-paint risk (pre-1960 housing)120moderately above the reference
Superfund site proximity128moderately above the reference
RMP-facility proximity85below the reference
Hazardous-waste site proximity82below the reference
Underground storage tanks104near the reference
NPDES wastewater proximity111moderately above the reference
Drinking-water non-compliance0well below the reference

Source: Census ACS 2018-2022 (5-year) + USEPA-clone EJ blockgroup stats (raw indicators + EJ disparity mirror).

Source. EPA Safe Drinking Water Information System · retrieved 2026-05-07. Reporting period 2020-01-012026-05-07.

What this is not. SDWIS records compliance against federal MCLs — not a direct readout of tap-water concentrations. Active health-based violations are not the same as a current crisis; we link to the EPA record so you can verify return-to-compliance status before forming a conclusion.