Massachusetts · drinking water · SDWIS through latest publish

Upton Dpw Water/Wastewater Division Water Quality — Upton, Massachusetts

PWSID MA2303000 · GroundwaterMunicipal

4,420 people served. No health-based SDWIS violations recorded in the past 5 years. 117 remain unresolved. Last cited 2 years ago.

ALL SDWIS VIOLATIONS · 20222026 (annual count)
Bar chart of annual values from 2022 to 2026, in violations. Most recent year (2026): 0 violations.114 violations'22'23'24'25'260 violations
Anomaly engine

Active signals

UNRESOLVED VIOLATION · SDWIS VIOLATION

Contaminant 1074

Unresolved Phase I/II/V Inorganic Chemical Rules violation cited in 2024 (contaminant 1074).

EPA SDWIS record

UNRESOLVED VIOLATION · SDWIS VIOLATION

Cadmium

Unresolved Phase I/II/V Inorganic Chemical Rules violation cited in 2024 (cadmium).

EPA SDWIS record

UNRESOLVED VIOLATION · SDWIS VIOLATION

Mercury (inorganic)

Unresolved Phase I/II/V Inorganic Chemical Rules violation cited in 2024 (mercury (inorganic)).

EPA SDWIS record

UNRESOLVED VIOLATION · SDWIS VIOLATION

Contaminant 2046

Unresolved Nitrate/Nitrite violation cited in 2022 (contaminant 2046).

EPA SDWIS record

Most-cited contaminants

What This Utility Gets Cited For

  • Contaminant 10283 citations
  • Contaminant 10323 citations
  • Contaminant 20463 citations
  • Contaminant 29593 citations
  • Alachlor3 citations
  • Endrin3 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 · CONTAMINANT 1074

2024 · Contaminant 1074 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1074

MONITORING · CONTAMINANT 1074UNRESOLVED

2024 · Contaminant 1074 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 1074

MONITORING · CADMIUM

2024 · Cadmium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1015

MONITORING · CADMIUMUNRESOLVED

2024 · Cadmium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 1015

MONITORING · MERCURY (INORGANIC)

2024 · Mercury (inorganic) · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1025

MONITORING · MERCURY (INORGANIC)UNRESOLVED

2024 · Mercury (inorganic) · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 1025

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 1028

2023 · Contaminant 1028 · Lead and Copper Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1028

MONITORING · CONTAMINANT 1028

2023 · Contaminant 1028 · Lead and Copper Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1028

MONITORING · CONTAMINANT 1028

2023 · Contaminant 1028 · Lead and Copper Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1028

MONITORING · CONTAMINANT 1032

2023 · Contaminant 1032 · Lead and Copper Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1032

MONITORING · CONTAMINANT 1032

2023 · Contaminant 1032 · Lead and Copper Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1032

MONITORING · CONTAMINANT 1032

2023 · Contaminant 1032 · Lead and Copper Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1032

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 2046UNRESOLVED

2022 · Contaminant 2046 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2046

MONITORING · CONTAMINANT 2046UNRESOLVED

2022 · Contaminant 2046 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2046

MONITORING · CONTAMINANT 2046UNRESOLVED

2022 · Contaminant 2046 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2046

MONITORING · CONTAMINANT 2959UNRESOLVED

2022 · Contaminant 2959 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2959

MONITORING · CONTAMINANT 2959UNRESOLVED

2022 · Contaminant 2959 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2959

MONITORING · CONTAMINANT 2959UNRESOLVED

2022 · Contaminant 2959 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2959

MONITORING · ALACHLORUNRESOLVED

2022 · Alachlor · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2105

MONITORING · ALACHLORUNRESOLVED

2022 · Alachlor · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2105

MONITORING · ALACHLORUNRESOLVED

2022 · Alachlor · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2105

MONITORING · ENDRINUNRESOLVED

2022 · Endrin · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2005

MONITORING · ENDRINUNRESOLVED

2022 · Endrin · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2005

MONITORING · ENDRINUNRESOLVED

2022 · Endrin · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2005

MONITORING · CONTAMINANT 2946UNRESOLVED

2022 · Contaminant 2946 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2946

MONITORING · CONTAMINANT 2946UNRESOLVED

2022 · Contaminant 2946 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2946

MONITORING · CONTAMINANT 2946UNRESOLVED

2022 · Contaminant 2946 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2946

MONITORING · CONTAMINANT 2067UNRESOLVED

2022 · Contaminant 2067 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2067

MONITORING · CONTAMINANT 2067UNRESOLVED

2022 · Contaminant 2067 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2067

MONITORING · CONTAMINANT 2067UNRESOLVED

2022 · Contaminant 2067 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2067

MONITORING · 2,4,5-TP (SILVEX)UNRESOLVED

2022 · 2,4,5-TP (Silvex) · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2065

MONITORING · 2,4,5-TP (SILVEX)UNRESOLVED

2022 · 2,4,5-TP (Silvex) · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2065

MONITORING · 2,4,5-TP (SILVEX)UNRESOLVED

2022 · 2,4,5-TP (Silvex) · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2065

MONITORING · CONTAMINANT 2326UNRESOLVED

2022 · Contaminant 2326 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2326

MONITORING · CONTAMINANT 2326UNRESOLVED

2022 · Contaminant 2326 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2326

MONITORING · CONTAMINANT 2326UNRESOLVED

2022 · Contaminant 2326 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2326

MONITORING · TOXAPHENEUNRESOLVED

2022 · Toxaphene · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2020

MONITORING · TOXAPHENEUNRESOLVED

2022 · Toxaphene · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2020

MONITORING · TOXAPHENEUNRESOLVED

2022 · Toxaphene · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2020

MONITORING · ATRAZINEUNRESOLVED

2022 · Atrazine · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2110

MONITORING · ATRAZINEUNRESOLVED

2022 · Atrazine · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2110

MONITORING · ATRAZINEUNRESOLVED

2022 · Atrazine · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2110

MONITORING · METHOXYCHLORUNRESOLVED

2022 · Methoxychlor · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2015

MONITORING · METHOXYCHLORUNRESOLVED

2022 · Methoxychlor · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2015

MONITORING · METHOXYCHLORUNRESOLVED

2022 · Methoxychlor · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2015

MONITORING · LINDANEUNRESOLVED

2022 · Lindane · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2010

MONITORING · LINDANEUNRESOLVED

2022 · Lindane · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2010

MONITORING · LINDANEUNRESOLVED

2022 · Lindane · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2010

MONITORING · TRICHLOROETHYLENE (TCE)UNRESOLVED

2022 · Trichloroethylene (TCE) · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2383

MONITORING · TRICHLOROETHYLENE (TCE)UNRESOLVED

2022 · Trichloroethylene (TCE) · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2383

MONITORING · TRICHLOROETHYLENE (TCE)UNRESOLVED

2022 · Trichloroethylene (TCE) · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2383

MONITORING · CONTAMINANT 2931UNRESOLVED

2022 · Contaminant 2931 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2931

MONITORING · CONTAMINANT 2931UNRESOLVED

2022 · Contaminant 2931 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2931

MONITORING · CONTAMINANT 2931UNRESOLVED

2022 · Contaminant 2931 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2931

MONITORING · CARBOFURANUNRESOLVED

2022 · Carbofuran · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2306

MONITORING · CARBOFURANUNRESOLVED

2022 · Carbofuran · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2306

MONITORING · CARBOFURANUNRESOLVED

2022 · Carbofuran · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2306

MONITORING · CONTAMINANT 2031UNRESOLVED

2022 · Contaminant 2031 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2031

MONITORING · CONTAMINANT 2031UNRESOLVED

2022 · Contaminant 2031 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2031

MONITORING · CONTAMINANT 2031UNRESOLVED

2022 · Contaminant 2031 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2031

MONITORING · CONTAMINANT 2035UNRESOLVED

2022 · Contaminant 2035 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2035

MONITORING · CONTAMINANT 2035UNRESOLVED

2022 · Contaminant 2035 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2035

MONITORING · CONTAMINANT 2035UNRESOLVED

2022 · Contaminant 2035 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2035

MONITORING · CONTAMINANT 2039UNRESOLVED

2022 · Contaminant 2039 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2039

MONITORING · CONTAMINANT 2039UNRESOLVED

2022 · Contaminant 2039 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2039

MONITORING · CONTAMINANT 2039UNRESOLVED

2022 · Contaminant 2039 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2039

MONITORING · CONTAMINANT 2041UNRESOLVED

2022 · Contaminant 2041 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2041

MONITORING · CONTAMINANT 2041UNRESOLVED

2022 · Contaminant 2041 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2041

MONITORING · CONTAMINANT 2041UNRESOLVED

2022 · Contaminant 2041 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2041

MONITORING · CONTAMINANT 2032UNRESOLVED

2022 · Contaminant 2032 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2032

MONITORING · CONTAMINANT 2032UNRESOLVED

2022 · Contaminant 2032 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2032

MONITORING · CONTAMINANT 2032UNRESOLVED

2022 · Contaminant 2032 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2032

MONITORING · CONTAMINANT 2033UNRESOLVED

2022 · Contaminant 2033 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2033

MONITORING · CONTAMINANT 2033UNRESOLVED

2022 · Contaminant 2033 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2033

MONITORING · CONTAMINANT 2033UNRESOLVED

2022 · Contaminant 2033 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2033

MONITORING · CONTAMINANT 2034UNRESOLVED

2022 · Contaminant 2034 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2034

MONITORING · CONTAMINANT 2034UNRESOLVED

2022 · Contaminant 2034 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2034

MONITORING · CONTAMINANT 2034UNRESOLVED

2022 · Contaminant 2034 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2034

MONITORING · CONTAMINANT 2274UNRESOLVED

2022 · Contaminant 2274 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2274

MONITORING · CONTAMINANT 2274UNRESOLVED

2022 · Contaminant 2274 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2274

MONITORING · CONTAMINANT 2274UNRESOLVED

2022 · Contaminant 2274 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2274

MONITORING · CONTAMINANT 2042UNRESOLVED

2022 · Contaminant 2042 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2042

MONITORING · CONTAMINANT 2042UNRESOLVED

2022 · Contaminant 2042 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2042

MONITORING · CONTAMINANT 2042UNRESOLVED

2022 · Contaminant 2042 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2042

MONITORING · CONTAMINANT 2036UNRESOLVED

2022 · Contaminant 2036 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2036

MONITORING · CONTAMINANT 2036UNRESOLVED

2022 · Contaminant 2036 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2036

MONITORING · CONTAMINANT 2036UNRESOLVED

2022 · Contaminant 2036 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2036

MONITORING · CONTAMINANT 2040UNRESOLVED

2022 · Contaminant 2040 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2040

MONITORING · CONTAMINANT 2040UNRESOLVED

2022 · Contaminant 2040 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2040

MONITORING · CONTAMINANT 2040UNRESOLVED

2022 · Contaminant 2040 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2040

MONITORING · CONTAMINANT 2037UNRESOLVED

2022 · Contaminant 2037 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2037

MONITORING · CONTAMINANT 2037UNRESOLVED

2022 · Contaminant 2037 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2037

MONITORING · CONTAMINANT 2037UNRESOLVED

2022 · Contaminant 2037 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2037

MONITORING · CONTAMINANT 2063UNRESOLVED

2022 · Contaminant 2063 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2063

MONITORING · CONTAMINANT 2063UNRESOLVED

2022 · Contaminant 2063 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2063

MONITORING · CONTAMINANT 2063UNRESOLVED

2022 · Contaminant 2063 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2063

MONITORING · VINYL CHLORIDEUNRESOLVED

2022 · Vinyl chloride · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2388

MONITORING · VINYL CHLORIDEUNRESOLVED

2022 · Vinyl chloride · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2388

MONITORING · VINYL CHLORIDEUNRESOLVED

2022 · Vinyl chloride · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2388

MONITORING · CONTAMINANT 2390UNRESOLVED

2022 · Contaminant 2390 · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2390

MONITORING · CONTAMINANT 2390UNRESOLVED

2022 · Contaminant 2390 · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2390

MONITORING · CONTAMINANT 2390UNRESOLVED

2022 · Contaminant 2390 · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2390

MONITORING · CONTAMINANT 2392UNRESOLVED

2022 · Contaminant 2392 · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2392

MONITORING · CONTAMINANT 2392UNRESOLVED

2022 · Contaminant 2392 · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2392

MONITORING · CONTAMINANT 2392UNRESOLVED

2022 · Contaminant 2392 · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2392

MONITORING · CONTAMINANT 2394UNRESOLVED

2022 · Contaminant 2394 · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2394

MONITORING · CONTAMINANT 2394UNRESOLVED

2022 · Contaminant 2394 · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2394

MONITORING · CONTAMINANT 2394UNRESOLVED

2022 · Contaminant 2394 · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2394

MONITORING · CONTAMINANT 2396UNRESOLVED

2022 · Contaminant 2396 · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2396

MONITORING · CONTAMINANT 2396UNRESOLVED

2022 · Contaminant 2396 · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2396

MONITORING · CONTAMINANT 2396UNRESOLVED

2022 · Contaminant 2396 · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2396

MONITORING · CONTAMINANT 2398UNRESOLVED

2022 · Contaminant 2398 · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2398

MONITORING · CONTAMINANT 2398UNRESOLVED

2022 · Contaminant 2398 · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2398

MONITORING · CONTAMINANT 2398UNRESOLVED

2022 · Contaminant 2398 · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2398

MONITORING · CONTAMINANT 2399UNRESOLVED

2022 · Contaminant 2399 · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2399

MONITORING · CONTAMINANT 2399UNRESOLVED

2022 · Contaminant 2399 · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2399

MONITORING · CONTAMINANT 2399UNRESOLVED

2022 · Contaminant 2399 · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2399

MONITORING · CONTAMINANT 2400UNRESOLVED

2022 · Contaminant 2400 · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2400

MONITORING · CONTAMINANT 2400UNRESOLVED

2022 · Contaminant 2400 · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2400

MONITORING · CONTAMINANT 2400UNRESOLVED

2022 · Contaminant 2400 · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2400

MONITORING · CONTAMINANT 2051UNRESOLVED

2022 · Contaminant 2051 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2051

MONITORING · CONTAMINANT 2051UNRESOLVED

2022 · Contaminant 2051 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2051

MONITORING · CONTAMINANT 2051UNRESOLVED

2022 · Contaminant 2051 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2051

MONITORING · 2,4-DUNRESOLVED

2022 · 2,4-D · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2050

MONITORING · 2,4-DUNRESOLVED

2022 · 2,4-D · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2050

MONITORING · 2,4-DUNRESOLVED

2022 · 2,4-D · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2050

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

Who Drinks This Water

Upton, Massachusetts (Census place; block-group disparity scores aggregated by centroid containment): a service population of 2,596. Local disparity score for pm2.5 (fine particulate) sits well below the reference (12). Why we surface this →

POPULATION SHARE
3.3%

Low-income

POPULATION SHARE
16.2%

People of color

POPULATION SHARE
1.1%

Under age 5

POPULATION SHARE
19.7%

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.21below the national median
  • OzoneHealth riskGround-level ozone (smog) inflames the airways. Even short exposures trigger asthma attacks and worsen chronic lung and heart disease.29below 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.21below 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.27below 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.74above the national median
  • 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.80in 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.57near 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.30below 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.53near 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.62above the national median
  • 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.58near 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)12well below the reference
Ozone19well below the reference
Nitrogen dioxide (NO₂)12well below the reference
Diesel particulate16well below the reference
Toxic releases (RSEI)41well below the reference
Traffic proximity37well below the reference
Lead-paint risk (pre-1960 housing)41well below the reference
Superfund site proximity31well below the reference
RMP-facility proximity17well below the reference
Hazardous-waste site proximity29well below the reference
Underground storage tanks32well below the reference
NPDES wastewater proximity32well below the reference
Drinking-water non-compliance54below 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 2022-01-012026-05-07.

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.