Chlorite violations in Pennsylvania
7 active public water systems in Pennsylvania had a Chlorite violation in the past three years, 1 of them in the latest quarter of EPA's data. What Chlorite is and why it matters.
Systems with a Chlorite violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Westmoreland Hospital Westmoreland County |
1,500 | 5 | 1 | |
|
Aqua PA Main System Montgomery County |
822,600 | 6 | 0 | |
|
Aqua PA Shenango Valley Wtp Mercer County |
48,000 | 2 | 0 | |
|
Hca Hazleton Division Luzerne County |
45,000 | 3 | 1 | |
|
Geisinger Medical Center Montour County |
6,442 | 3 | 0 | |
|
Frederick Living Montgomery County |
640 | 6 | 1 | |
|
Dock Woods Community Montgomery County |
72 | 1 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Chlorite, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Chlorite 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. Retrieved from ECHO on Oct 11, 2026.