Pennsylvania · drinking water · SDWIS through latest publish

Gillett Mhc Water Quality — Allentown, Pennsylvania

PWSID PA2080025 · Mixed sourcesPrivate

100 people served. 1 health-based SDWIS violation recorded in the past 5 years. 35 remain unresolved. Last cited this year.

ALL SDWIS VIOLATIONS · 20202026 (annual count)
Bar chart of annual values from 2020 to 2026, in violations. Most recent year (2026): 4 violations.52 violations'20'21'22'23'24'25'264 violations
Anomaly engine

Active signals

UNRESOLVED VIOLATION · SDWIS VIOLATION

Chlorine

Unresolved Disinfectants and Disinfection Byproducts (Stage 2) violation cited in 2026 (chlorine).

EPA SDWIS record

UNRESOLVED VIOLATION · SDWIS VIOLATION

Contaminant 8000

Unresolved Revised Total Coliform Rule violation cited in 2026 (contaminant 8000).

EPA SDWIS record

UNRESOLVED VIOLATION · SDWIS VIOLATION

Contaminant 0200

Unresolved Surface Water Treatment Rule violation cited in 2026 (contaminant 0200).

EPA SDWIS record

UNRESOLVED VIOLATION · SDWIS VIOLATION

Contaminant 0300

Unresolved Long Term 1 Enhanced SWTR violation cited in 2026 (contaminant 0300).

EPA SDWIS record

Most-cited contaminants

What This Utility Gets Cited For

  • Contaminant 030041 citations
  • Chlorine35 citations
  • Contaminant 020027 citations
  • Haloacetic Acids (HAA5)16 citations
  • Total Trihalomethanes (TTHM)13 citations
  • Contaminant 700013 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 · CHLORINEUNRESOLVED

2026 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled

CONTAMINANT CODE 0999

MONITORING · CONTAMINANT 8000UNRESOLVED

2026 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 0200UNRESOLVED

2026 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0300UNRESOLVED

2026 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled

CONTAMINANT CODE 0300

OTHER · CONTAMINANT 7500

2025 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER; returned to compliance

CONTAMINANT CODE 7500

OTHER · CONTAMINANT 7500

2025 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER; returned to compliance

CONTAMINANT CODE 7500

HEALTH-BASED · CONTAMINANT 0300UNRESOLVED

2025 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation

CONTAMINANT CODE 0300

OTHER · CONTAMINANT 7500UNRESOLVED

2025 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER

CONTAMINANT CODE 7500

MONITORING · CONTAMINANT 0300UNRESOLVED

2025 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0300

2025 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0300

OTHER · CONTAMINANT 7500

2025 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER; returned to compliance

CONTAMINANT CODE 7500

OTHER · CONTAMINANT 7500

2025 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER; returned to compliance

CONTAMINANT CODE 7500

MONITORING · CONTAMINANT 0300UNRESOLVED

2025 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0300

2025 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0300

MONITORING · CHLORINE

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

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

MONITORING · CONTAMINANT 0200

2025 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0300

2025 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0300

MONITORING · CHLORINE

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

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

MONITORING · CONTAMINANT 0200

2025 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0300

2025 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0300

MONITORING · CHLORINEUNRESOLVED

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

Failure to monitor as scheduled

CONTAMINANT CODE 0999

MONITORING · CONTAMINANT 8000UNRESOLVED

2025 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 0200UNRESOLVED

2025 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0300UNRESOLVED

2025 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled

CONTAMINANT CODE 0300

MONITORING · HALOACETIC ACIDS (HAA5)UNRESOLVED

2025 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2456

MONITORING · TOTAL TRIHALOMETHANES (TTHM)UNRESOLVED

2025 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2950

MONITORING · CONTAMINANT 8000UNRESOLVED

2025 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 0200UNRESOLVED

2025 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0300UNRESOLVED

2025 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled

CONTAMINANT CODE 0300

OTHER · CONTAMINANT 7500

2024 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER; returned to compliance

CONTAMINANT CODE 7500

OTHER · CONTAMINANT 7500

2024 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER; returned to compliance

CONTAMINANT CODE 7500

MONITORING · CONTAMINANT 0300UNRESOLVED

2024 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0300

2024 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0300UNRESOLVED

2024 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0300

2024 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0300UNRESOLVED

2024 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0300

2024 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0800

2024 · Contaminant 0800 · Long Term 2 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0800

MONITORING · CONTAMINANT 0800

2024 · Contaminant 0800 · Long Term 2 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0800

MONITORING · HALOACETIC ACIDS (HAA5)

2024 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2456

MONITORING · HALOACETIC ACIDS (HAA5)UNRESOLVED

2024 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2456

MONITORING · HALOACETIC ACIDS (HAA5)

2024 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2456

MONITORING · CONTAMINANT 0300

2024 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0300UNRESOLVED

2024 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0300

2024 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0300

OTHER · CONTAMINANT 7000

2024 · Contaminant 7000 · Phase I/II/V Synthetic Organic Chemical Rules

OTHER; returned to compliance

CONTAMINANT CODE 7000

OTHER · CONTAMINANT 7000

2024 · Contaminant 7000 · Phase I/II/V Synthetic Organic Chemical Rules

OTHER; returned to compliance

CONTAMINANT CODE 7000

OTHER · CONTAMINANT 7500

2024 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER; returned to compliance

CONTAMINANT CODE 7500

OTHER · CONTAMINANT 7500

2024 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER; returned to compliance

CONTAMINANT CODE 7500

OTHER · CONTAMINANT 7500

2024 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER; returned to compliance

CONTAMINANT CODE 7500

OTHER · CONTAMINANT 7500

2024 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER; returned to compliance

CONTAMINANT CODE 7500

MONITORING · CONTAMINANT 0300

2024 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0300

2024 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0300

MONITORING · CHLORINE

2024 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

MONITORING · CHLORINEUNRESOLVED

2024 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled

CONTAMINANT CODE 0999

MONITORING · CHLORINE

2024 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

MONITORING · CONTAMINANT 0200

2024 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2024 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200

2024 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0200

MONITORING · CHLORINEUNRESOLVED

2023 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled

CONTAMINANT CODE 0999

MONITORING · CHLORINE

2023 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

MONITORING · CHLORINE

2023 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

MONITORING · CHLORINE

2023 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

MONITORING · CHLORINE

2023 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

OTHER · CONTAMINANT 7000

2023 · Contaminant 7000 · Phase I/II/V Synthetic Organic Chemical Rules

OTHER; returned to compliance

CONTAMINANT CODE 7000

OTHER · CONTAMINANT 7000

2023 · Contaminant 7000 · Phase I/II/V Synthetic Organic Chemical Rules

OTHER; returned to compliance

CONTAMINANT CODE 7000

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0300UNRESOLVED

2023 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0300

2023 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0300

2023 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0300

MONITORING · HALOACETIC ACIDS (HAA5)

2023 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2456

MONITORING · HALOACETIC ACIDS (HAA5)UNRESOLVED

2023 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2456

MONITORING · HALOACETIC ACIDS (HAA5)

2023 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2456

MONITORING · TOTAL TRIHALOMETHANES (TTHM)

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2950

MONITORING · TOTAL TRIHALOMETHANES (TTHM)UNRESOLVED

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2950

MONITORING · TOTAL TRIHALOMETHANES (TTHM)

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2950

OTHER · CONTAMINANT 7000

2023 · Contaminant 7000 · Phase I/II/V Synthetic Organic Chemical Rules

OTHER; returned to compliance

CONTAMINANT CODE 7000

OTHER · CONTAMINANT 7000

2023 · Contaminant 7000 · Phase I/II/V Synthetic Organic Chemical Rules

OTHER; returned to compliance

CONTAMINANT CODE 7000

MONITORING · CHLORINE

2023 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

MONITORING · CHLORINE

2023 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

MONITORING · CHLORINE

2023 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

MONITORING · CHLORINE

2023 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

MONITORING · CONTAMINANT 0200

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0200

MONITORING · HALOACETIC ACIDS (HAA5)

2023 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2456

MONITORING · HALOACETIC ACIDS (HAA5)

2023 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2456

MONITORING · TOTAL TRIHALOMETHANES (TTHM)

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2950

MONITORING · TOTAL TRIHALOMETHANES (TTHM)

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2950

MONITORING · BERYLLIUM

2023 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1040

MONITORING · BERYLLIUMUNRESOLVED

2023 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 1040

MONITORING · BERYLLIUM

2023 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1040

MONITORING · CYANIDE

2023 · Cyanide · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1041

MONITORING · CYANIDEUNRESOLVED

2023 · Cyanide · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 1041

MONITORING · CYANIDE

2023 · Cyanide · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1041

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 · CONTAMINANT 0200

2022 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200

2022 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0300

2022 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0300

2022 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0300

MONITORING · HALOACETIC ACIDS (HAA5)

2022 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2456

MONITORING · HALOACETIC ACIDS (HAA5)

2022 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2456

MONITORING · HALOACETIC ACIDS (HAA5)

2022 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2456

MONITORING · TOTAL TRIHALOMETHANES (TTHM)

2022 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2950

MONITORING · TOTAL TRIHALOMETHANES (TTHM)

2022 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2950

MONITORING · TOTAL TRIHALOMETHANES (TTHM)

2022 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2950

OTHER · CONTAMINANT 7000

2022 · Contaminant 7000 · Phase I/II/V Synthetic Organic Chemical Rules

OTHER; returned to compliance

CONTAMINANT CODE 7000

OTHER · CONTAMINANT 7000

2022 · Contaminant 7000 · Phase I/II/V Synthetic Organic Chemical Rules

OTHER; returned to compliance

CONTAMINANT CODE 7000

OTHER · CONTAMINANT 7000

2022 · Contaminant 7000 · Phase I/II/V Synthetic Organic Chemical Rules

OTHER; returned to compliance

CONTAMINANT CODE 7000

OTHER · CONTAMINANT 7000

2022 · Contaminant 7000 · Phase I/II/V Synthetic Organic Chemical Rules

OTHER; returned to compliance

CONTAMINANT CODE 7000

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 · CONTAMINANT 5000

2022 · Contaminant 5000 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 5000

MONITORING · CONTAMINANT 5000

2022 · Contaminant 5000 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 5000

MONITORING · CONTAMINANT 5000

2022 · Contaminant 5000 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 5000

MONITORING · CONTAMINANT 0200

2022 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200

2022 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200

2022 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200

2022 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0300

2022 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0300

2022 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0300

2022 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0300

2022 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0300

OTHER · CONTAMINANT 7000

2022 · Contaminant 7000 · Phase I/II/V Synthetic Organic Chemical Rules

OTHER; returned to compliance

CONTAMINANT CODE 7000

OTHER · CONTAMINANT 7000

2022 · Contaminant 7000 · Phase I/II/V Synthetic Organic Chemical Rules

OTHER; returned to compliance

CONTAMINANT CODE 7000

OTHER · CONTAMINANT 7000

2022 · Contaminant 7000 · Phase I/II/V Synthetic Organic Chemical Rules

OTHER; returned to compliance

CONTAMINANT CODE 7000

MONITORING · CONTAMINANT 0200

2022 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200

2022 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200

2022 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0200

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 · CONTAMINANT 0200

2022 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200

2022 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200

2022 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0300

2022 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0300

2022 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0300

2022 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0300

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 · CONTAMINANT 0200

2021 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200

2021 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0300

2021 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0300

2021 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0300

2021 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0300

2021 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0300

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 · TOTAL TRIHALOMETHANES (TTHM)

2021 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2950

MONITORING · TOTAL TRIHALOMETHANES (TTHM)

2021 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2950

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 · TOTAL TRIHALOMETHANES (TTHM)

2021 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2950

MONITORING · TOTAL TRIHALOMETHANES (TTHM)

2021 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2950

MONITORING · BERYLLIUMUNRESOLVED

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

Failure to monitor as scheduled

CONTAMINANT CODE 1040

MONITORING · BERYLLIUM

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

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1040

MONITORING · BERYLLIUM

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

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1040

MONITORING · CYANIDEUNRESOLVED

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

Failure to monitor as scheduled

CONTAMINANT CODE 1041

MONITORING · CYANIDE

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

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1041

MONITORING · CYANIDE

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

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1041

MONITORING · CONTAMINANT 0300

2020 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0300

2020 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0300

MONITORING · BERYLLIUM

2020 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1040

MONITORING · BERYLLIUM

2020 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1040

MONITORING · CYANIDE

2020 · Cyanide · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1041

MONITORING · CYANIDE

2020 · Cyanide · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1041

MONITORING · CONTAMINANT 0300

2020 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0300

2020 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 1094

2020 · Contaminant 1094 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1094

MONITORING · CONTAMINANT 1094UNRESOLVED

2020 · Contaminant 1094 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 1094

MONITORING · CONTAMINANT 1094UNRESOLVED

2020 · Contaminant 1094 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 1094

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

Who Drinks This Water

Allentown, Pennsylvania (Census place; block-group disparity scores aggregated by centroid containment): a service population of 125,292. Local disparity score for pm2.5 (fine particulate) sits moderately above the reference (131). Why we surface this →

POPULATION SHARE
21.4%

Low-income

POPULATION SHARE
70.1%

People of color

POPULATION SHARE
6.8%

Under age 5

POPULATION SHARE
12.5%

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.58near the national median
  • OzoneHealth riskGround-level ozone (smog) inflames the airways. Even short exposures trigger asthma attacks and worsen chronic lung and heart disease.35below 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.61above 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.78above 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.95in the highest 5% 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.69above 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.87in the highest 20% 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.82in the highest 20% 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.90in the highest 10% nationally
  • 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.61above 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.86in 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.46near the national median
  • 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)131moderately above the reference
Ozone105near the reference
Nitrogen dioxide (NO₂)136moderately above the reference
Diesel particulate170well above the reference burden
Toxic releases (RSEI)207severely above the reference burden
Traffic proximity149moderately above the reference
Lead-paint risk (pre-1960 housing)183well above the reference burden
Superfund site proximity179well above the reference burden
RMP-facility proximity193well above the reference burden
Hazardous-waste site proximity131moderately above the reference
Underground storage tanks166well above the reference burden
NPDES wastewater proximity98near 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.