Community Water System · PWSID PA7220037

Williamstown Boro Auth

Serves 2,390 peopleSurface WaterOwner: Local GovernmentWilliamstown, Pennsylvania
Nothing open that measures the water, but 1 open testing or paperwork violation.

A missed test is not evidence of bad water. It also is not evidence of good water: for that period nobody checked.

On record since 2003: 29 violations. 23 missed or late tests · 6 notices or reports. Most recent began 2025-10-01.

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
0Treatment lapse
23Missed or late test1 open
6Notice or report

More violations on record than 79% 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

2003 · Notice or report: 22003 · Notice or report: 220052006 · Notice or report: 12007 · Notice or report: 32007 · Notice or report: 32007 · Notice or report: 3201020152016 · Missed or late test: 22016 · Missed or late test: 22019 · Missed or late test: 52019 · Missed or late test: 52019 · Missed or late test: 52019 · Missed or late test: 52019 · Missed or late test: 52020 · Missed or late test: 22020 · Missed or late test: 220202021 · Missed or late test: 62021 · Missed or late test: 62021 · Missed or late test: 62021 · Missed or late test: 62021 · Missed or late test: 62021 · Missed or late test: 62022 · Missed or late test: 22022 · Missed or late test: 22023 · Missed or late test: 42023 · Missed or late test: 42023 · Missed or late test: 42023 · Missed or late test: 42025 · Missed or late test: 22025 · Missed or late test: 22025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
79% missed or late test · 2321% notice or report · 6

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

Open now (1)

  1. 2025-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/ROpen

Every violation on record

  1. 2025-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/ROpen
  2. 2025-01-01Carbon, TotalMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  3. 2023-07-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  4. 2023-06-01Revised Total Coliform RuleMONBack in compliance
  5. 2023-04-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  6. 2023-04-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  7. 2022-10-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  8. 2022-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  9. 2021-12-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  10. 2021-11-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  11. 2021-11-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  12. 2021-10-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  13. 2021-10-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  14. 2021-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  15. 2020-10-01Carbon, TotalMonitoring and Reporting (DBP)Back in compliance
  16. 2020-07-01Carbon, TotalMonitoring and Reporting (DBP)Back in compliance
  17. 2019-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  18. 2019-06-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  19. 2019-05-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  20. 2019-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  21. 2019-04-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  22. 2016-07-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  23. 2016-07-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  24. 2007-07-11Public Notice ×2PN Violation for NPDWR ViolationBack in compliance
  25. 2007-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
Show the other 3 entries
  1. 2006-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  2. 2003-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  3. 2003-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance

System details

Population served2,390
Service connections926
Water sourceSurface Water
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityWilliamstown
EPA ZIP on file17098

Areas served

  • Dauphin County

Reading this record

Williamstown Boro Auth is a community water system that draws from surface water and serves about 2,390 people in Williamstown, 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.