Pennsylvania · drinking water · SDWIS through latest publish

Lilly Borough Water Authority Water Quality — Lilly, Pennsylvania

PWSID PA4110046 · Purchased / wholesaleMunicipal

1,388 people served. No health-based SDWIS violations recorded in the past 5 years. 16 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.26 violations'20'21'22'23'24'25'260 violations
Anomaly engine

Active signals

UNRESOLVED VIOLATION · SDWIS VIOLATION

Contaminant 2031

Unresolved Nitrate/Nitrite violation cited in 2023 (contaminant 2031).

EPA SDWIS record

UNRESOLVED VIOLATION · SDWIS VIOLATION

Contaminant 2040

Unresolved Nitrate/Nitrite violation cited in 2023 (contaminant 2040).

EPA SDWIS record

UNRESOLVED VIOLATION · SDWIS VIOLATION

Contaminant 2041

Unresolved Nitrate/Nitrite violation cited in 2023 (contaminant 2041).

EPA SDWIS record

UNRESOLVED VIOLATION · SDWIS VIOLATION

Contaminant 2063

Unresolved Nitrate/Nitrite violation cited in 2023 (contaminant 2063).

EPA SDWIS record

Most-cited contaminants

What This Utility Gets Cited For

  • Contaminant 070022 citations
  • Contaminant 70008 citations
  • Haloacetic Acids (HAA5)7 citations
  • Total Trihalomethanes (TTHM)5 citations
  • Contaminant 10944 citations
  • Contaminant 75003 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.

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 · 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)

2024 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2456

MONITORING · CONTAMINANT 2031

2023 · Contaminant 2031 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2031

MONITORING · CONTAMINANT 2031UNRESOLVED

2023 · Contaminant 2031 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2031

MONITORING · CONTAMINANT 2031

2023 · Contaminant 2031 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2031

MONITORING · CONTAMINANT 2040

2023 · Contaminant 2040 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2040

MONITORING · CONTAMINANT 2040UNRESOLVED

2023 · Contaminant 2040 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2040

MONITORING · CONTAMINANT 2040

2023 · Contaminant 2040 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2040

MONITORING · CONTAMINANT 2041

2023 · Contaminant 2041 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2041

MONITORING · CONTAMINANT 2041UNRESOLVED

2023 · Contaminant 2041 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2041

MONITORING · CONTAMINANT 2041

2023 · Contaminant 2041 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2041

MONITORING · CONTAMINANT 2063

2023 · Contaminant 2063 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2063

MONITORING · CONTAMINANT 2063UNRESOLVED

2023 · Contaminant 2063 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2063

MONITORING · CONTAMINANT 2063

2023 · Contaminant 2063 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2063

MONITORING · ALACHLOR

2023 · Alachlor · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2105

MONITORING · ALACHLORUNRESOLVED

2023 · Alachlor · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2105

MONITORING · ALACHLOR

2023 · Alachlor · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2105

MONITORING · ATRAZINE

2023 · Atrazine · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2110

MONITORING · ATRAZINEUNRESOLVED

2023 · Atrazine · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2110

MONITORING · ATRAZINE

2023 · Atrazine · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2110

MONITORING · CONTAMINANT 2326

2023 · Contaminant 2326 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2326

MONITORING · CONTAMINANT 2326UNRESOLVED

2023 · Contaminant 2326 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2326

MONITORING · CONTAMINANT 2326

2023 · Contaminant 2326 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2326

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

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

OTHER · CONTAMINANT 7000

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

OTHER; returned to compliance

CONTAMINANT CODE 7000

MONITORING · CONTAMINANT 0700

2022 · Contaminant 0700 · Drinking water rule (140)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0700

MONITORING · CONTAMINANT 0700

2022 · Contaminant 0700 · Drinking water rule (140)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0700

MONITORING · CONTAMINANT 0700

2022 · Contaminant 0700 · Drinking water rule (140)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0700

MONITORING · CONTAMINANT 0700

2022 · Contaminant 0700 · Drinking water rule (140)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0700

MONITORING · CONTAMINANT 0700

2022 · Contaminant 0700 · Drinking water rule (140)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0700

MONITORING · CONTAMINANT 0700

2022 · Contaminant 0700 · Drinking water rule (140)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0700

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 · HALOACETIC ACIDS (HAA5)UNRESOLVED

2022 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled

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 · HALOACETIC ACIDS (HAA5)UNRESOLVED

2022 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2456

MONITORING · HALOACETIC ACIDS (HAA5)UNRESOLVED

2022 · Haloacetic Acids (HAA5) · Total Trihalomethanes Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2456

MONITORING · TOTAL TRIHALOMETHANES (TTHM)UNRESOLVED

2022 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled

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

MONITORING · TOTAL TRIHALOMETHANES (TTHM)UNRESOLVED

2022 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2950

MONITORING · TOTAL TRIHALOMETHANES (TTHM)UNRESOLVED

2022 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled

CONTAMINANT CODE 2950

MONITORING · CONTAMINANT 0700

2022 · Contaminant 0700 · Drinking water rule (140)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0700

MONITORING · CONTAMINANT 0700

2022 · Contaminant 0700 · Drinking water rule (140)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0700

MONITORING · CONTAMINANT 0700

2022 · Contaminant 0700 · Drinking water rule (140)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0700

MONITORING · CONTAMINANT 1094UNRESOLVED

2022 · Contaminant 1094 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 1094

MONITORING · CONTAMINANT 1094

2022 · Contaminant 1094 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1094

MONITORING · CONTAMINANT 1094

2022 · Contaminant 1094 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1094

MONITORING · CONTAMINANT 1094UNRESOLVED

2022 · Contaminant 1094 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 1094

MONITORING · CONTAMINANT 0700

2021 · Contaminant 0700 · Drinking water rule (140)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0700

MONITORING · CONTAMINANT 0700

2021 · Contaminant 0700 · Drinking water rule (140)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0700

MONITORING · CONTAMINANT 0700

2021 · Contaminant 0700 · Drinking water rule (140)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0700

MONITORING · CONTAMINANT 0700

2021 · Contaminant 0700 · Drinking water rule (140)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0700

MONITORING · CONTAMINANT 0700UNRESOLVED

2021 · Contaminant 0700 · Drinking water rule (140)

Failure to monitor as scheduled

CONTAMINANT CODE 0700

MONITORING · CONTAMINANT 0700

2021 · Contaminant 0700 · Drinking water rule (140)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0700

MONITORING · CONTAMINANT 0700

2021 · Contaminant 0700 · Drinking water rule (140)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0700

MONITORING · CONTAMINANT 0700

2021 · Contaminant 0700 · Drinking water rule (140)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0700

MONITORING · CONTAMINANT 0700

2021 · Contaminant 0700 · Drinking water rule (140)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0700

MONITORING · CONTAMINANT 0700

2021 · Contaminant 0700 · Drinking water rule (140)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0700

MONITORING · CONTAMINANT 0700

2020 · Contaminant 0700 · Drinking water rule (140)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0700

MONITORING · CONTAMINANT 0700

2020 · Contaminant 0700 · Drinking water rule (140)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0700

MONITORING · CONTAMINANT 0700

2020 · Contaminant 0700 · Drinking water rule (140)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0700

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

Who Drinks This Water

Lilly, Pennsylvania (Census place; block-group disparity scores aggregated by centroid containment): a service population of 777. Local disparity score for pm2.5 (fine particulate) sits well below the reference (27). Why we surface this →

POPULATION SHARE
10.5%

Low-income

POPULATION SHARE
1.8%

People of color

POPULATION SHARE
8.2%

Under age 5

POPULATION SHARE
22.8%

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.32below the national median
  • OzoneHealth riskGround-level ozone (smog) inflames the airways. Even short exposures trigger asthma attacks and worsen chronic lung and heart disease.46near 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.17below 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.6below 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.45near 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.17below 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 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.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.28below 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.35below 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.28below 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.44near 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.89in the highest 20% nationally
EJ disparity scores · service-area block groups (100 = national reference; higher = greater disparate burden)
IndicatorDisparity scoreReading
PM2.5 (fine particulate)27well below the reference
Ozone51below the reference
Nitrogen dioxide (NO₂)14well below the reference
Diesel particulate6well below the reference
Toxic releases (RSEI)36well below the reference
Traffic proximity16well below the reference
Lead-paint risk (pre-1960 housing)71below the reference
Superfund site proximity0well below the reference
RMP-facility proximity0well below the reference
Hazardous-waste site proximity30well below the reference
Underground storage tanks0well below the reference
NPDES wastewater proximity35well below the reference
Drinking-water non-compliance70below 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.