Community Water System · PWSID PA7360164

Northwestern Lancaster Co Auth

Serves 2,968 peopleSurface Water PurchasedOwner: Local GovernmentManheim, Pennsylvania
Nothing open right now.

On record since 2005: 16 violations. 9 missed or late tests · 7 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
0Treatment lapse
9Missed or late test
7Notice or report

More violations on record than 65% 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

2005 · Missed or late test: 12005 · Notice or report: 120052006 · Notice or report: 12008 · Missed or late test: 12009 · Notice or report: 12010 · Notice or report: 120102011 · Notice or report: 22011 · Notice or report: 220152016 · Missed or late test: 22016 · Missed or late test: 22017 · Missed or late test: 32017 · Missed or late test: 32017 · Missed or late test: 32018 · Notice or report: 120202025 · 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.
56% missed or late test · 944% notice or report · 7

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

Every violation on record

  1. 2025-07-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  2. 2025-01-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  3. 2018-12-11Public NoticePN Violation for NPDWR ViolationBack in compliance
  4. 2017-12-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  5. 2017-11-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  6. 2017-04-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  7. 2016-10-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  8. 2016-10-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  9. 2011-07-12Public NoticePN Violation for NPDWR ViolationBack in compliance
  10. 2011-07-11Public NoticePN Violation for NPDWR ViolationBack in compliance
  11. 2010-07-12Public NoticePN Violation for NPDWR ViolationBack in compliance
  12. 2009-04-12Public NoticePN Violation for NPDWR ViolationBack in compliance
  13. 2008-04-01Dbp Stage 2Monitoring, Routine (IDSE)Back in compliance
  14. 2006-04-12Public NoticePN Violation for NPDWR ViolationBack in compliance
  15. 2005-04-12Public NoticePN Violation for NPDWR ViolationBack in compliance
  16. 2005-01-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance

System details

Population served2,968
Service connections844
Water sourceSurface Water Purchased
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityManheim
EPA ZIP on file17545

Areas served

  • Lancaster County

Reading this record

Northwestern Lancaster Co Auth is a community water system that draws from surface water purchased and serves about 2,968 people in Manheim, 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.