Warwick Water Works

PWSID: PA1150157

No active violations
This system has no unresolved violations. The most recent violation on record was 2025-05-01.

This system has more violations on record than 77% of water systems in Pennsylvania.

Violation trend: 1.4 per year over the last 5 years, down from 4.8 per year in the previous 5.

System Details

Population Served98
Service Connections46
Water SourceGroundwater
System TypeCommunity Water System
OwnerPrivate
StatusActive
CityKing of Prussia
EPA ZIP on File19406

Violation History (43 total)

ContaminantViolationDateHealth-BasedStatus
0700MR2025-05-01Returned to Compliance
0700MR2024-12-01Returned to Compliance
0700MR2024-09-01Returned to Compliance
0700MR2024-09-01Returned to Compliance
1036MR2024-01-01 MajorReturned to Compliance
0700MR2023-05-01Returned to Compliance
0700MR2023-05-01Returned to Compliance
7000Other2020-10-01Returned to Compliance
7000Other2020-10-01Returned to Compliance
7500Other2019-12-17Returned to Compliance
7500Other2019-12-17Returned to Compliance
7500Other2019-12-17Returned to Compliance
7500Other2019-12-16Returned to Compliance
7500Other2019-12-16Returned to Compliance
7500Other2019-12-16Returned to Compliance
7500Other2019-11-19Returned to Compliance
7500Other2019-11-19Returned to Compliance
7500Other2019-11-19Returned to Compliance
8000TT2019-11-06YesReturned to Compliance
8000TT2019-11-06YesReturned to Compliance
8000RPT2019-11-06Returned to Compliance
8000RPT2019-11-06Returned to Compliance
8000TT2019-11-05YesReturned to Compliance
8000TT2019-11-05YesReturned to Compliance
8000RPT2019-11-05Returned to Compliance
8000RPT2019-11-05Returned to Compliance
8000TT2019-10-09YesReturned to Compliance
8000TT2019-10-09YesReturned to Compliance
8000RPT2019-10-09Returned to Compliance
8000RPT2019-10-09Returned to Compliance
0700TT2019-09-01YesReturned to Compliance
7500Other2015-01-01Returned to Compliance
7000Other2012-07-01Returned to Compliance
7500Other2011-03-11Returned to Compliance
5000MR2011-01-01Returned to Compliance
7000Other2010-07-01Returned to Compliance
7000Other2009-07-01Returned to Compliance
7000Other2008-07-01Returned to Compliance
7000Other2006-07-01Returned to Compliance
5000MR2005-01-01Returned to Compliance
5000MR2005-01-01Returned to Compliance
7000Other2004-07-01Returned to Compliance
5000MR2001-07-01Returned to Compliance

Understanding This Water System's Record

Warwick Water Works is a community water system water system that draws from groundwater sources and serves a population of 98 in King of Prussia, Pennsylvania. This page shows its complete compliance history as reported to the EPA's Safe Drinking Water Information System (SDWIS), the federal database that tracks every public water system in the United States.

What Do These Violations Mean?

Health-based violations mean the system exceeded an EPA maximum contaminant level (MCL) or failed to provide required treatment. These indicate potential health risks from contaminants like lead, arsenic, bacteria, nitrates, or disinfection byproducts. Non-health-based violations involve monitoring, reporting, or procedural requirements — the system missed a testing deadline or failed to notify customers, but contaminant levels were not necessarily unsafe.

What Should You Do?

Your water utility is required to publish an annual Consumer Confidence Report (CCR) that details test results and any violations. If your system has active health-based violations, consider a certified water filter rated for the specific contaminants involved. The contaminant guides on this site explain health risks and filter options for common pollutants. For the most current results, contact your water utility directly — EPA data can lag weeks or months behind real-time testing.