Pennsylvania · drinking water · SDWIS through latest publish

Warwick Mobile Home Park Water Quality — Exton, Pennsylvania

PWSID PA1150081 · GroundwaterPrivate

40 people served. 6 health-based SDWIS violations recorded in the past 5 years. 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.38 violations'20'21'22'23'24'25'260 violations
Anomaly engine

Active signals

HEALTH-BASED · 5-YEAR WINDOW · SDWIS VIOLATION

Contaminant 0700

Drinking water rule (140) health-based violation cited in 2021 (contaminant 0700).

EPA SDWIS record

HEALTH-BASED · 5-YEAR WINDOW · SDWIS VIOLATION

Contaminant 0700

Drinking water rule (140) health-based violation cited in 2021 (contaminant 0700).

EPA SDWIS record

HEALTH-BASED · 5-YEAR WINDOW · SDWIS VIOLATION

Contaminant 0700

Drinking water rule (140) health-based violation cited in 2021 (contaminant 0700).

EPA SDWIS record

HEALTH-BASED · 5-YEAR WINDOW · SDWIS VIOLATION

Contaminant 0700

Drinking water rule (140) health-based violation cited in 2021 (contaminant 0700).

EPA SDWIS record

Most-cited contaminants

What This Utility Gets Cited For

  • Contaminant 07006 citations
  • Contaminant 75006 citations
  • Chlorine4 citations
  • Contaminant 20313 citations
  • Contaminant 20323 citations
  • Arsenic3 citations
Violation history

What's On The SDWIS Record

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

MONITORING · CHLORINE

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

Failure to monitor as scheduled; returned to compliance

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 2033

2022 · Contaminant 2033 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2033

MONITORING · CONTAMINANT 2033

2022 · Contaminant 2033 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2033

MONITORING · CONTAMINANT 2031

2022 · Contaminant 2031 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2031

MONITORING · CONTAMINANT 2031

2022 · Contaminant 2031 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2031

MONITORING · CONTAMINANT 2031

2022 · Contaminant 2031 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2031

MONITORING · CONTAMINANT 2032

2022 · Contaminant 2032 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2032

MONITORING · CONTAMINANT 2032

2022 · Contaminant 2032 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2032

MONITORING · CONTAMINANT 2032

2022 · Contaminant 2032 · Nitrate/Nitrite

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2032

HEALTH-BASED · CONTAMINANT 0700

2021 · Contaminant 0700 · Drinking water rule (140)

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0700

HEALTH-BASED · CONTAMINANT 0700

2021 · Contaminant 0700 · Drinking water rule (140)

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0700

HEALTH-BASED · CONTAMINANT 0700

2021 · Contaminant 0700 · Drinking water rule (140)

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0700

OTHER · CONTAMINANT 7500

2021 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER; returned to compliance

CONTAMINANT CODE 7500

OTHER · CONTAMINANT 7500

2021 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER; returned to compliance

CONTAMINANT CODE 7500

OTHER · CONTAMINANT 7500

2021 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER; returned to compliance

CONTAMINANT CODE 7500

HEALTH-BASED · CONTAMINANT 0700

2021 · Contaminant 0700 · Drinking water rule (140)

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0700

HEALTH-BASED · CONTAMINANT 0700

2021 · Contaminant 0700 · Drinking water rule (140)

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0700

HEALTH-BASED · CONTAMINANT 0700

2021 · Contaminant 0700 · Drinking water rule (140)

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0700

OTHER · CONTAMINANT 7500

2021 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER; returned to compliance

CONTAMINANT CODE 7500

OTHER · CONTAMINANT 7500

2021 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER; returned to compliance

CONTAMINANT CODE 7500

OTHER · CONTAMINANT 7500

2021 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER; returned to compliance

CONTAMINANT CODE 7500

OTHER · CONTAMINANT 7000

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

OTHER; returned to compliance

CONTAMINANT CODE 7000

OTHER · CONTAMINANT 7000

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

OTHER; returned to compliance

CONTAMINANT CODE 7000

MONITORING · CHLORINE

2020 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

MONITORING · CHLORINE

2020 · Chlorine · Disinfectants and Disinfection Byproducts (Stage 2)

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 0999

MONITORING · ARSENIC

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

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1005

MONITORING · ARSENIC

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

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1005

MONITORING · ARSENIC

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

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1005

MONITORING · BARIUM

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

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1010

MONITORING · BARIUM

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

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1010

MONITORING · BARIUM

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

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1010

MONITORING · CADMIUM

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

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1015

MONITORING · CADMIUM

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

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1015

MONITORING · CADMIUM

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

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1015

MONITORING · CHROMIUM

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

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1020

MONITORING · CHROMIUM

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

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1020

MONITORING · CHROMIUM

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

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1020

MONITORING · FLUORIDE

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

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1024

MONITORING · FLUORIDE

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

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1024

MONITORING · FLUORIDE

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

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1024

MONITORING · MERCURY (INORGANIC)

2020 · Mercury (inorganic) · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1025

MONITORING · MERCURY (INORGANIC)

2020 · Mercury (inorganic) · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1025

MONITORING · MERCURY (INORGANIC)

2020 · Mercury (inorganic) · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1025

MONITORING · SELENIUM

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

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1035

MONITORING · SELENIUM

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

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1035

MONITORING · SELENIUM

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

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1035

MONITORING · CONTAMINANT 1036

2020 · Contaminant 1036 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1036

MONITORING · CONTAMINANT 1036

2020 · Contaminant 1036 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1036

MONITORING · CONTAMINANT 1036

2020 · Contaminant 1036 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1036

MONITORING · ASBESTOS

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

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1045

MONITORING · ASBESTOS

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

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1045

MONITORING · ASBESTOS

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

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1045

MONITORING · CONTAMINANT 1074

2020 · Contaminant 1074 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1074

MONITORING · CONTAMINANT 1074

2020 · Contaminant 1074 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1074

MONITORING · CONTAMINANT 1074

2020 · Contaminant 1074 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1074

MONITORING · CONTAMINANT 1075

2020 · Contaminant 1075 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1075

MONITORING · CONTAMINANT 1075

2020 · Contaminant 1075 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1075

MONITORING · CONTAMINANT 1075

2020 · Contaminant 1075 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1075

MONITORING · CONTAMINANT 1085

2020 · Contaminant 1085 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1085

MONITORING · CONTAMINANT 1085

2020 · Contaminant 1085 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1085

MONITORING · CONTAMINANT 1085

2020 · Contaminant 1085 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1085

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

Who Drinks This Water

Exton, Pennsylvania (Census place; block-group disparity scores aggregated by centroid containment): a service population of 6,272. Local disparity score for pm2.5 (fine particulate) sits well below the reference (50). Why we surface this →

POPULATION SHARE
4.3%

Low-income

POPULATION SHARE
34.1%

People of color

POPULATION SHARE
3.7%

Under age 5

POPULATION SHARE
10.9%

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.62above the national median
  • OzoneHealth riskGround-level ozone (smog) inflames the airways. Even short exposures trigger asthma attacks and worsen chronic lung and heart disease.47near 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.57near 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.69above 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.78above 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.60above 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.53near the national median
  • 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.91in the highest 10% 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.63above 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.63above the national median
  • Underground storage tanksHealth riskDensity of underground tanks (gasoline, heating oil, industrial fluids). Leaking tanks are a leading source of benzene and other volatile organic compounds in groundwater drinking-water supplies.80in the highest 20% nationally
  • NPDES wastewater proximityHealth riskDistance to permitted industrial wastewater dischargers. Closer proximity raises exposure to pollutants released into surface waters used for fishing, recreation, and downstream drinking-water intakes.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.76above the national median
EJ disparity scores · service-area block groups (100 = national reference; higher = greater disparate burden)
IndicatorDisparity scoreReading
PM2.5 (fine particulate)50well below the reference
Ozone48well below the reference
Nitrogen dioxide (NO₂)45well below the reference
Diesel particulate55below the reference
Toxic releases (RSEI)61below the reference
Traffic proximity48well below the reference
Lead-paint risk (pre-1960 housing)33well below the reference
Superfund site proximity71below the reference
RMP-facility proximity49well below the reference
Hazardous-waste site proximity50well below the reference
Underground storage tanks61below the reference
NPDES wastewater proximity35well below 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.