Community Water System · PWSID PA5100093

Zelienople Boro

Serves 4,123 peopleSurface Water PurchasedOwner: Local GovernmentZelienople, 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 2006: 28 violations. 1 treatment lapse · 11 missed or late tests · 16 notices or reports. Most recent began 2025-07-01.

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
11Missed or late test
16Notice or report1 open

More violations on record than 78% 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

20052006 · Notice or report: 12010 · Notice or report: 1201020152016 · Missed or late test: 32016 · Missed or late test: 32016 · Missed or late test: 32016 · Notice or report: 22016 · Notice or report: 22017 · Missed or late test: 42017 · Missed or late test: 42017 · Missed or late test: 42017 · Missed or late test: 42019 · Treatment lapse: 12019 · Missed or late test: 22019 · Missed or late test: 22019 · Notice or report: 32019 · Notice or report: 32019 · Notice or report: 320202021 · Notice or report: 22021 · Notice or report: 22022 · Notice or report: 22022 · Notice or report: 22023 · Notice or report: 22023 · Notice or report: 22024 · Notice or report: 22024 · Notice or report: 22025 · Missed or late test: 22025 · Missed or late test: 22025 · Notice or report: 12025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
4% treatment lapse · 139% missed or late test · 1157% notice or report · 16

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.

Lead, 90th percentile 4 results on file · action level 15 ppb

6 ppb
5.6 ppb
5 ppb
3 ppb

Open now (1)

  1. 2021-07-01Consumer Confidence RuleCCR Complete Failure to ReportOpen

Every violation on record

  1. 2025-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  2. 2025-04-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Unfilt/GWR)Period ended · no return to compliance on file
  3. 2025-04-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  4. 2024-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  5. 2024-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  6. 2023-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  7. 2023-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  8. 2022-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  9. 2022-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  10. 2021-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  11. 2021-07-01Consumer Confidence RuleCCR Complete Failure to ReportOpen
  12. 2019-09-15Public NoticePN Violation for NPDWR ViolationBack in compliance
  13. 2019-08-05Revised Total Coliform RuleRPTBack in compliance
  14. 2019-08-05Revised Total Coliform RuleTTBack in compliance
  15. 2019-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  16. 2019-02-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Unfilt/GWR)Back in compliance
  17. 2019-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  18. 2017-09-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Unfilt/GWR)Back in compliance
  19. 2017-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  20. 2017-04-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Unfilt/GWR)Back in compliance
  21. 2017-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  22. 2016-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  23. 2016-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  24. 2016-06-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Unfilt/GWR)Back in compliance
  25. 2016-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
Show the other 3 entries
  1. 2016-04-01Revised Total Coliform RuleOtherBack in compliance
  2. 2010-11-10Public NoticePN Violation for NPDWR ViolationBack in compliance
  3. 2006-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance

System details

Population served4,123
Service connections1,815
Water sourceSurface Water Purchased
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityZelienople
EPA ZIP on file16063

Areas served

  • Butler County

Reading this record

Zelienople Boro is a community water system that draws from surface water purchased and serves about 4,123 people in Zelienople, 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.