Community Water System · PWSID PA1150834

Westtown School

Serves 900 peopleGroundwaterOwner: Public/PrivateWest Chester, PennsylvaniaServes a school or daycare
Nothing open right now.

On record since 2008: 50 violations. 1 treatment lapse · 38 missed or late tests · 11 notices or reports. Most recent began 2023-01-01.

None of them is a measurement of contaminated water.

For this year's test results, ask the utility for its annual Consumer Confidence Report. Every community system must publish one.

0Over the limit
1Treatment lapse
38Missed or late test
11Notice or report

More violations on record than 89% of active water systems in Pennsylvania. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

20052008 · Notice or report: 22009 · Notice or report: 32009 · Notice or report: 320102012 · Notice or report: 12013 · Treatment lapse: 12013 · Notice or report: 22015 · Missed or late test: 182015 · Missed or late test: 182015 · Missed or late test: 182015 · Missed or late test: 182015 · Missed or late test: 182015 · Missed or late test: 182015 · Missed or late test: 182015 · Missed or late test: 182015 · Missed or late test: 1820152016 · Missed or late test: 42016 · Missed or late test: 42016 · Notice or report: 22017 · Missed or late test: 12018 · Missed or late test: 32018 · Missed or late test: 32018 · Notice or report: 12019 · Missed or late test: 12020 · Missed or late test: 120202021 · Missed or late test: 72021 · Missed or late test: 72021 · Missed or late test: 72021 · Missed or late test: 72022 · Missed or late test: 22023 · Missed or late test: 12025
One square ≈ 2 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
2% treatment lapse · 176% missed or late test · 3822% notice or report · 11

Across Pennsylvania, 71% of violations are missed or late tests and 2% are water over a limit.

Lead & copper at the tap

Utilities sample taps in homes most likely to have lead pipes, and report the 90th-percentile result: 9 in 10 homes sampled came in at or below this number. Above the red line (the action level) the utility must act. The action level is not a safe level; EPA's health goal for lead is zero. EPA's file does not date these results, so they are shown highest first.

Copper, 90th percentile 3 results on file · action level 1.3 mg/L

2 mg/L
1.6 mg/L
1.6 mg/L

Every violation on record

  1. 2023-01-01Lead and Copper RuleLead Consumer NoticeBack in compliance
  2. 2022-03-01Groundwater RuleMonitoring of Treatment (SWTR-Unfilt/GWR)Back in compliance
  3. 2022-01-01Lead and Copper RuleLead Consumer NoticeBack in compliance
  4. 2021-08-01Groundwater RuleMonitoring of Treatment (SWTR-Unfilt/GWR)Period ended · no return to compliance on file
  5. 2021-07-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  6. 2021-07-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  7. 2021-04-01Groundwater RuleMonitoring of Treatment (SWTR-Unfilt/GWR)Period ended · no return to compliance on file
  8. 2021-02-01Groundwater RuleMonitoring of Treatment (SWTR-Unfilt/GWR)Back in compliance
  9. 2021-01-01Groundwater RuleMonitoring of Treatment (SWTR-Unfilt/GWR)Back in compliance
  10. 2021-01-01Lead and Copper RuleLead Consumer NoticeBack in compliance
  11. 2020-03-01Groundwater RuleMonitoring of Treatment (SWTR-Unfilt/GWR)Back in compliance
  12. 2019-12-01Groundwater RuleMonitoring of Treatment (SWTR-Unfilt/GWR)Back in compliance
  13. 2018-07-01NitriteMonitoring, RegularBack in compliance
  14. 2018-07-01NitrateMonitoring, RegularBack in compliance
  15. 2018-07-01Groundwater RuleMonitoring of Treatment (SWTR-Unfilt/GWR)Back in compliance
  16. 2018-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  17. 2017-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  18. 2016-12-11Public NoticePN Violation for NPDWR ViolationBack in compliance
  19. 2016-11-01Groundwater RuleMonitoring of Treatment (SWTR-Unfilt/GWR)Back in compliance
  20. 2016-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  21. 2016-06-01Groundwater RuleMonitoring of Treatment (SWTR-Unfilt/GWR)Back in compliance
  22. 2016-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  23. 2016-01-01Groundwater RuleMonitoring of Treatment (SWTR-Unfilt/GWR)Back in compliance
  24. 2015-10-01Radium-228Monitoring, RegularBack in compliance
  25. 2015-10-01Radium-226Monitoring, RegularBack in compliance
Show the other 23 entries
  1. 2015-10-01Combined UraniumMonitoring, RegularBack in compliance
  2. 2015-10-01Gross Alpha, Excl. Radon and UMonitoring, RegularBack in compliance
  3. 2015-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  4. 2015-08-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  5. 2015-01-01Thallium, TotalMonitoring, RegularBack in compliance
  6. 2015-01-01Beryllium, TotalMonitoring, RegularBack in compliance
  7. 2015-01-01Antimony, TotalMonitoring, RegularBack in compliance
  8. 2015-01-01SeleniumMonitoring, RegularBack in compliance
  9. 2015-01-01NickelMonitoring, RegularBack in compliance
  10. 2015-01-01MercuryMonitoring, RegularBack in compliance
  11. 2015-01-01FluorideMonitoring, RegularBack in compliance
  12. 2015-01-01CyanideMonitoring, RegularBack in compliance
  13. 2015-01-01ChromiumMonitoring, RegularBack in compliance
  14. 2015-01-01CadmiumMonitoring, RegularBack in compliance
  15. 2015-01-01BariumMonitoring, RegularBack in compliance
  16. 2015-01-01ArsenicMonitoring, RegularBack in compliance
  17. 2013-05-19Public NoticePN Violation for NPDWR ViolationBack in compliance
  18. 2013-04-12Public NoticePN Violation for NPDWR ViolationBack in compliance
  19. 2013-04-09Lead and Copper RuleOCCT/SOWT Treatment Installation/DemonstrationBack in compliance
  20. 2012-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  21. 2009-02-11Public Notice ×2PN Violation for NPDWR ViolationBack in compliance
  22. 2009-01-11Public NoticePN Violation for NPDWR ViolationBack in compliance
  23. 2008-10-11Public Notice ×2PN Violation for NPDWR ViolationBack in compliance

System details

Population served900
Service connections28
Water sourceGroundwater
System typeCommunity Water System
OwnerPublic/Private
StatusActive
CityWest Chester
EPA ZIP on file19382

Areas served

  • Chester County

Reading this record

Westtown School is a community water system that draws from groundwater and serves about 900 people in West Chester, Pennsylvania. Everything above comes from the EPA's Safe Drinking Water Information System (SDWIS), where states report every violation by every public water system.

Four kinds of violation. Only one is a measurement of the water: over the limit means a test came back above a legal maximum (an MCL). A treatment lapse means a required protective step was not done, such as disinfection, filtration, fixing a defect an inspector found, or filing a lead-pipe inventory. A missed or late test means a required test was skipped or never reported. That is the most common kind, and the most misread: it does not mean the water was bad, and it does not mean the water was fine. Notices and reports covers public notices and the annual Consumer Confidence Report.

Status. “Back in compliance” means the state recorded a return to compliance. “Period ended” means the violation's compliance period is over but no return to compliance was ever filed, which is common in older records. EPA's federal copy lags state records by months, so call the utility for anything current.