Tapcensus

Chlorine (MRDL) violations in Pennsylvania

429 active public water systems in Pennsylvania had a Chlorine (MRDL) violation in the past three years, 66 of them in the latest quarter of EPA's data. What Chlorine (MRDL) is and why it matters.

Health effects: Acute high-dose exposure to chlorinated water can cause eye and nose irritation, stomach discomfort, and nausea. Chronic exposure above the MRDL is primarily a concern because elevated chlorine accelerates formation of trihalomethanes and haloacetic acids, which are associated with increased cancer risk over time.

Systems with a Chlorine (MRDL) violation

Latest quarter first, then largest first
SystemServesStatusRules violated, 3 yrUnresolved
Cornerstone Living
Lehigh County
44 7 0
Lakeview Mobilehome Park
Butler County
44 6 0
Mountain Crest Development
Wayne County
44 7 0
Echo Beach MHP
Bradford County
43 5 1
Perlo Ridge Apts
Perry County
42 5 0
Lakerun Learning Center
Wayne County
41 4 0
Springdale Gardens
Carbon County
41 4 1
Family and Friends
Bucks County
40 4 0
Ossies Mobile Home Community
Lehigh County
40 3 0
Warwick Mobile Home Park
Chester County
40 1 0
Rural Solution W3 LLC
Crawford County
38 9 1
Eagle Ridge Personal Care Home
Clinton County
37 10 1
The Orchard at Airport Road
Northampton County
37 3 0
The Valley MHC
Warren County
37 6 0
Poco Apartments (upper)
Monroe County
36 9 3
Wigwam Park Commons
Monroe County
36 2 0
Indiana Wesleyan Sch
Indiana County
35 4 1
Pulva Corp
Butler County
35 1 0
Ridge View Personal Care Home
Blair County
35 3 1
Wynwood House at Salem Hill
Centre County
32 5 0
Anthracite Industries INC
Northumberland County
30 2 0
Little Acres MHP
Westmoreland County
30 6 2
Robinsons Mobile Home Park
Butler County
30 10 0
Doe Run Mobile Home Park
Chester County
29 7 0
Shawville Power LLC
Clearfield County
28 3 0
Colonial Woods
Chester County
25 2 0
Fentons Corner
Bucks County
25 3 0
Whipperwill MHP
Luzerne County
25 8 0
Ridgebury Mobile Manor
Bradford County
23 7 0
About this data

A system is counted once if any of its violations in the past three years involved Chlorine (MRDL), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Chlorine (MRDL) alone.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Pennsylvania records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.