New Jersey · drinking water · SDWIS through latest publish

Trenton Water Works Water Quality — Trenton, New Jersey

PWSID NJ1111001 · Surface waterMunicipal

217,000 people served. 8 health-based SDWIS violations recorded in the past 5 years. 108 remain unresolved. Last cited 2 years ago.

ALL SDWIS VIOLATIONS · 20202026 (annual count)
Bar chart of annual values from 2020 to 2026, in violations. Most recent year (2026): 0 violations.169 violations'20'21'22'23'24'25'260 violations
Anomaly engine

Active signals

UNRESOLVED VIOLATION · SDWIS VIOLATION

Total Trihalomethanes (TTHM)

Unresolved Total Trihalomethanes Rule violation cited in 2024 (total trihalomethanes (tthm)).

EPA SDWIS record

UNRESOLVED VIOLATION · SDWIS VIOLATION

Total Trihalomethanes (TTHM)

Unresolved Total Trihalomethanes Rule violation cited in 2024 (total trihalomethanes (tthm)).

EPA SDWIS record

UNRESOLVED VIOLATION · SDWIS VIOLATION

Total Trihalomethanes (TTHM)

Unresolved Total Trihalomethanes Rule violation cited in 2024 (total trihalomethanes (tthm)).

EPA SDWIS record

UNRESOLVED VIOLATION · SDWIS VIOLATION

Total Trihalomethanes (TTHM)

Unresolved Total Trihalomethanes Rule violation cited in 2024 (total trihalomethanes (tthm)).

EPA SDWIS record

Most-cited contaminants

What This Utility Gets Cited For

  • Contaminant 800042 citations
  • Contaminant 020042 citations
  • Chlorine29 citations
  • Contaminant 500023 citations
  • Total Trihalomethanes (TTHM)10 citations
  • Contaminant 03007 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.

HEALTH-BASED · TOTAL TRIHALOMETHANES (TTHM)UNRESOLVED

2024 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Maximum contaminant level exceeded

CONTAMINANT CODE 2950

HEALTH-BASED · TOTAL TRIHALOMETHANES (TTHM)UNRESOLVED

2024 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Maximum contaminant level exceeded

CONTAMINANT CODE 2950

HEALTH-BASED · TOTAL TRIHALOMETHANES (TTHM)UNRESOLVED

2024 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Maximum contaminant level exceeded

CONTAMINANT CODE 2950

HEALTH-BASED · TOTAL TRIHALOMETHANES (TTHM)UNRESOLVED

2024 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Maximum contaminant level exceeded

CONTAMINANT CODE 2950

MONITORING · CONTAMINANT 5000

2024 · Contaminant 5000 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 5000

MONITORING · CONTAMINANT 5000

2024 · Contaminant 5000 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 5000

MONITORING · CONTAMINANT 5000UNRESOLVED

2024 · Contaminant 5000 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 5000

MONITORING · CONTAMINANT 5000

2023 · Contaminant 5000 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 5000

MONITORING · CONTAMINANT 5000

2023 · Contaminant 5000 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 5000

MONITORING · CONTAMINANT 5000

2023 · Contaminant 5000 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 5000

MONITORING · CONTAMINANT 0300UNRESOLVED

2023 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0300UNRESOLVED

2023 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0300UNRESOLVED

2023 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 5000

2023 · Contaminant 5000 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 5000

MONITORING · CONTAMINANT 5000

2023 · Contaminant 5000 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 5000

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 · 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 · XYLENES (TOTAL)

2023 · Xylenes (total) · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2378

MONITORING · XYLENES (TOTAL)

2023 · Xylenes (total) · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2378

MONITORING · BENZENE

2023 · Benzene · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2380

MONITORING · BENZENE

2023 · Benzene · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2380

MONITORING · CONTAMINANT 2955

2023 · Contaminant 2955 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2955

MONITORING · CONTAMINANT 2955

2023 · Contaminant 2955 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2955

MONITORING · CONTAMINANT 2964

2023 · Contaminant 2964 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2964

MONITORING · CONTAMINANT 2964

2023 · Contaminant 2964 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2964

MONITORING · CONTAMINANT 2968

2023 · Contaminant 2968 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2968

MONITORING · CONTAMINANT 2968

2023 · Contaminant 2968 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2968

MONITORING · CONTAMINANT 2969

2023 · Contaminant 2969 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2969

MONITORING · CONTAMINANT 2969

2023 · Contaminant 2969 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2969

MONITORING · CONTAMINANT 2976

2023 · Contaminant 2976 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2976

MONITORING · CONTAMINANT 2976

2023 · Contaminant 2976 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2976

MONITORING · CONTAMINANT 2977

2023 · Contaminant 2977 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2977

MONITORING · CONTAMINANT 2977

2023 · Contaminant 2977 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2977

MONITORING · CONTAMINANT 2979

2023 · Contaminant 2979 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2979

MONITORING · CONTAMINANT 2979

2023 · Contaminant 2979 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2979

MONITORING · METHYL TERT-BUTYL ETHER (MTBE)

2023 · Methyl tert-butyl ether (MTBE) · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2980

MONITORING · METHYL TERT-BUTYL ETHER (MTBE)

2023 · Methyl tert-butyl ether (MTBE) · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2980

MONITORING · CONTAMINANT 2981

2023 · Contaminant 2981 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2981

MONITORING · CONTAMINANT 2981

2023 · Contaminant 2981 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2981

MONITORING · CONTAMINANT 2982

2023 · Contaminant 2982 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2982

MONITORING · CONTAMINANT 2982

2023 · Contaminant 2982 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2982

MONITORING · CONTAMINANT 2983

2023 · Contaminant 2983 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2983

MONITORING · CONTAMINANT 2983

2023 · Contaminant 2983 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2983

MONITORING · CONTAMINANT 2984

2023 · Contaminant 2984 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2984

MONITORING · CONTAMINANT 2984

2023 · Contaminant 2984 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2984

MONITORING · CONTAMINANT 2985

2023 · Contaminant 2985 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2985

MONITORING · CONTAMINANT 2985

2023 · Contaminant 2985 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2985

MONITORING · CONTAMINANT 2987

2023 · Contaminant 2987 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2987

MONITORING · CONTAMINANT 2987

2023 · Contaminant 2987 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2987

MONITORING · CONTAMINANT 2989

2023 · Contaminant 2989 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2989

MONITORING · CONTAMINANT 2989

2023 · Contaminant 2989 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2989

MONITORING · CONTAMINANT 2990

2023 · Contaminant 2990 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2990

MONITORING · CONTAMINANT 2990

2023 · Contaminant 2990 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2990

MONITORING · CONTAMINANT 2991

2023 · Contaminant 2991 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2991

MONITORING · CONTAMINANT 2991

2023 · Contaminant 2991 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2991

MONITORING · CONTAMINANT 2992

2023 · Contaminant 2992 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2992

MONITORING · CONTAMINANT 2992

2023 · Contaminant 2992 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2992

MONITORING · CONTAMINANT 2996

2023 · Contaminant 2996 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2996

MONITORING · CONTAMINANT 2996

2023 · Contaminant 2996 · Arsenic Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2996

MONITORING · CONTAMINANT 5000

2023 · Contaminant 5000 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 5000

MONITORING · CONTAMINANT 5000

2023 · Contaminant 5000 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 5000

MONITORING · CONTAMINANT 5000UNRESOLVED

2023 · Contaminant 5000 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 5000

MONITORING · CONTAMINANT 8000

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000UNRESOLVED

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000UNRESOLVED

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000UNRESOLVED

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000UNRESOLVED

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · TOTAL TRIHALOMETHANES (TTHM)UNRESOLVED

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2950

MONITORING · HALOACETIC ACIDS (HAA5)UNRESOLVED

2023 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2456

MONITORING · CONTAMINANT 8000

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000UNRESOLVED

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000UNRESOLVED

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000UNRESOLVED

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure

CONTAMINANT CODE 8000

MONITORING · TOTAL TRIHALOMETHANES (TTHM)UNRESOLVED

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2950

MONITORING · HALOACETIC ACIDS (HAA5)UNRESOLVED

2023 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2456

MONITORING · CONTAMINANT 8000

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000UNRESOLVED

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000UNRESOLVED

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure

CONTAMINANT CODE 8000

MONITORING · TOTAL TRIHALOMETHANES (TTHM)UNRESOLVED

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2950

MONITORING · HALOACETIC ACIDS (HAA5)UNRESOLVED

2023 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2456

MONITORING · CONTAMINANT 8000

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000UNRESOLVED

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000UNRESOLVED

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure

CONTAMINANT CODE 8000

MONITORING · TOTAL TRIHALOMETHANES (TTHM)UNRESOLVED

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2950

MONITORING · HALOACETIC ACIDS (HAA5)UNRESOLVED

2023 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2456

MONITORING · CONTAMINANT 8000

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000UNRESOLVED

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000UNRESOLVED

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000UNRESOLVED

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000

2023 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

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 · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CHLORINEUNRESOLVED

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

Failure to monitor as scheduled

CONTAMINANT CODE 0999

MONITORING · CHLORINEUNRESOLVED

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

Failure to monitor as scheduled

CONTAMINANT CODE 0999

MONITORING · CHLORINEUNRESOLVED

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

Failure to monitor as scheduled

CONTAMINANT CODE 0999

MONITORING · CHLORINEUNRESOLVED

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

Failure to monitor as scheduled

CONTAMINANT CODE 0999

MONITORING · CONTAMINANT 5000

2023 · Contaminant 5000 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 5000

MONITORING · CONTAMINANT 5000UNRESOLVED

2023 · Contaminant 5000 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 5000

MONITORING · CONTAMINANT 5000

2023 · Contaminant 5000 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 5000

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 · CONTAMINANT 5000

2023 · Contaminant 5000 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 5000

MONITORING · CONTAMINANT 5000

2023 · Contaminant 5000 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 5000

MONITORING · CONTAMINANT 5000UNRESOLVED

2023 · Contaminant 5000 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 5000

MONITORING · CHLORINEUNRESOLVED

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

Failure to monitor as scheduled

CONTAMINANT CODE 0999

MONITORING · CHLORINEUNRESOLVED

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

Failure to monitor as scheduled

CONTAMINANT CODE 0999

MONITORING · CHLORINEUNRESOLVED

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

Failure to monitor as scheduled

CONTAMINANT CODE 0999

MONITORING · CHLORINEUNRESOLVED

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

Failure to monitor as scheduled

CONTAMINANT CODE 0999

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

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 · CHLORINEUNRESOLVED

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

Failure to monitor as scheduled

CONTAMINANT CODE 0999

MONITORING · CHLORINEUNRESOLVED

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

Failure to monitor as scheduled

CONTAMINANT CODE 0999

MONITORING · CHLORINEUNRESOLVED

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

Failure to monitor as scheduled

CONTAMINANT CODE 0999

MONITORING · CHLORINEUNRESOLVED

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

Failure to monitor as scheduled

CONTAMINANT CODE 0999

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CHLORINEUNRESOLVED

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

Failure to monitor as scheduled

CONTAMINANT CODE 0999

MONITORING · CHLORINEUNRESOLVED

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

Failure to monitor as scheduled

CONTAMINANT CODE 0999

MONITORING · CHLORINEUNRESOLVED

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

Failure to monitor as scheduled

CONTAMINANT CODE 0999

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2023 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CHLORINE

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

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

MONITORING · CHLORINEUNRESOLVED

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

Failure to monitor as scheduled

CONTAMINANT CODE 0999

MONITORING · CHLORINEUNRESOLVED

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

Failure to monitor as scheduled

CONTAMINANT CODE 0999

MONITORING · CHLORINEUNRESOLVED

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

Failure to monitor as scheduled

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 8000

2022 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000UNRESOLVED

2022 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000

2022 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · TOTAL TRIHALOMETHANES (TTHM)UNRESOLVED

2022 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2950

MONITORING · HALOACETIC ACIDS (HAA5)UNRESOLVED

2022 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2456

MONITORING · CONTAMINANT 8000

2022 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000UNRESOLVED

2022 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure

CONTAMINANT CODE 8000

MONITORING · CONTAMINANT 8000

2022 · Contaminant 8000 · Revised Total Coliform Rule

Monitoring failure; returned to compliance

CONTAMINANT CODE 8000

MONITORING · CHLORINEUNRESOLVED

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

Failure to monitor as scheduled

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 · CHLORINEUNRESOLVED

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

Failure to monitor as scheduled

CONTAMINANT CODE 0999

MONITORING · CHLORINEUNRESOLVED

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

Failure to monitor as scheduled

CONTAMINANT CODE 0999

MONITORING · CONTAMINANT 0200UNRESOLVED

2022 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2022 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2022 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2022 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2022 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2022 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

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

OTHER · CONTAMINANT 7000

2021 · Contaminant 7000 · Phase I/II/V Synthetic Organic Chemical Rules

OTHER; returned to compliance

CONTAMINANT CODE 7000

MONITORING · CONTAMINANT 0300UNRESOLVED

2021 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 5000UNRESOLVED

2021 · Contaminant 5000 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 5000

MONITORING · CONTAMINANT 5000

2021 · Contaminant 5000 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 5000

HEALTH-BASED · TOTAL TRIHALOMETHANES (TTHM)UNRESOLVED

2021 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Maximum contaminant level exceeded

CONTAMINANT CODE 2950

HEALTH-BASED · CONTAMINANT 0300

2021 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

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

HEALTH-BASED · CONTAMINANT 5000

2021 · Contaminant 5000 · Phase I/II/V Inorganic Chemical Rules

Treatment technique violation; returned to compliance

CONTAMINANT CODE 5000

MONITORING · CONTAMINANT 1052

2021 · Contaminant 1052 · Lead and Copper Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1052

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 · CONTAMINANT 5000

2021 · Contaminant 5000 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 5000

MONITORING · CONTAMINANT 0300

2020 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 5000UNRESOLVED

2020 · Contaminant 5000 · Phase I/II/V Inorganic Chemical Rules

Treatment technique violation

CONTAMINANT CODE 5000

MONITORING · CONTAMINANT 2946

2020 · Contaminant 2946 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2946

MONITORING · CONTAMINANT 2931

2020 · Contaminant 2931 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2931

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

Who Drinks This Water

Trenton, New Jersey (Census place; block-group disparity scores aggregated by centroid containment): a service population of 90,055. Local disparity score for pm2.5 (fine particulate) sits below the reference (86). Why we surface this →

POPULATION SHARE
26.2%

Low-income

POPULATION SHARE
86.7%

People of color

POPULATION SHARE
7.8%

Under age 5

POPULATION SHARE
12.2%

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.33below the national median
  • OzoneHealth riskGround-level ozone (smog) inflames the airways. Even short exposures trigger asthma attacks and worsen chronic lung and heart disease.69above 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.68above 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.75above 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.83in the highest 20% 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.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.56near the national median
  • 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.82in the highest 20% 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.80above 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.97in the highest 5% 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.67above 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.99in the highest 5% nationally
EJ disparity scores · service-area block groups (100 = national reference; higher = greater disparate burden)
IndicatorDisparity scoreReading
PM2.5 (fine particulate)86below the reference
Ozone158well above the reference burden
Nitrogen dioxide (NO₂)168well above the reference burden
Diesel particulate189well above the reference burden
Toxic releases (RSEI)194well above the reference burden
Traffic proximity172well above the reference burden
Lead-paint risk (pre-1960 housing)218severely above the reference burden
Superfund site proximity66below the reference
RMP-facility proximity204severely above the reference burden
Hazardous-waste site proximity199well above the reference burden
Underground storage tanks228severely above the reference burden
NPDES wastewater proximity169well above the reference burden
Drinking-water non-compliance250severely above the reference burden

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.