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
Centerville Muni Water Auth
Bedford County
75 8 1
Country Club Park
Centre County
75 2 0
Empire Mobile Home Park
Centre County
75 8 2
Hanover Commons
Bucks County
75 6 0
Hershey Farm Restaurant
Lancaster County
75 2 0
Hyland MHP
Luzerne County
75 5 2
Jackson Commerce Park W S
Mercer County
75 8 0
Stonebridge Gardens MHP
Somerset County
75 3 0
Watrous Water Association
Tioga County
75 7 1
West Lake Pipe & Fitting
Lancaster County
75 3 0
Gap View Mobile Home Park
Northampton County
72 3 0
Country Terrace Estates
Columbia County
70 1 0
Grandview Acres MHP
Mercer County
70 10 3
Maplewood Mobile Home Park
Chester County
70 7 0
Panorama MHP
Adams County
70 6 0
Washington Inn
Berks County
70 4 0
Countryside MHP
Crawford County
69 4 0
Chateau Resort and Con Center
Monroe County
65 4 2
Lake RD MHP Menu Mate Mushroom
Chester County
65 4 0
Rosebud Barrett Mine
Indiana County
65 5 0
Woodbine Oaks MHP
Butler County
65 4 0
Rolling Hills Manor
Union County
64 6 1
Echo Valley MHP
Chester County
60 7 1
Elderberry MHP
Crawford County
60 8 0
Environmental Stone Works
Schuylkill County
60 3 0
Little Britain MHP
Lancaster County
60 5 0
Meadowbrook Mobile Homes
Northampton County
60 4 1
Winside Ind Park
Northampton County
60 1 0
KA Middlebury Mobile Home Park
Tioga County
57 5 1
Sugarcreek MHP
Crawford County
56 2 0
Ridgeview MHP
Chester County
55 3 0
Neighbors of Penn Lake
Crawford County
54 3 0
Deerhaven White Beauty View ES
Pike County
53 5 0
Glasgow Municipal Water Works
Beaver County
51 7 2
Nolts Red Maple MHP
Lancaster County
51 8 0
Beaver Valley MHP
Lancaster County
50 3 0
Colonial Glenn Estates
Beaver County
50 8 0
Country Corner RV Park
Mercer County
50 6 0
Keswick Pointe
Monroe County
50 5 0
Newtown Hill Trailer Park
Tioga County
50 5 1
Odyssey Behavioral Health
Bucks County
50 2 0
Scenic Mobile Home Park
Mercer County
50 6 0
Sky View Terrace
Beaver County
50 7 0
Usda Bradford Ranger Station
McKean County
50 3 1
White Rock Mobile Home Park
Monroe County
50 9 2
Estates at Stone Row
Monroe County
48 11 3
Poco Apartments (lower)
Monroe County
48 9 2
Grampas Woods Estates
Pike County
45 5 0
Shermans Valley Apts Perlo III
Perry County
45 5 0
Arnold Apartments
Wayne County
44 4 1
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.