Water Quality: York, PA
13 water systems • 222,980 people served
Multiple Health ViolationsWater Quality Summary
York is served by 13 public water systems with a combined service population of 222,980 people, and has 387 EPA Safe Drinking Water Act violations on record. Critically, 28 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. York's violation count is 42% above the national average for Pennsylvania. Contaminants associated with violations include Barium, Chlorine Dioxide, E. coli, Selenium.
Contaminants Found
Increases blood pressure and causes cardiovascular effects with long-term exposure.
Common source: Natural rock deposits, oil drilling operations, coal power plant waste
EPA limit: 2 mg/L
Can cause anemia in infants and young children; may cause nervous system effects at high levels.
Common source: Water treatment disinfectant used to control taste, odor, and microorganisms
EPA limit: 0.8 mg/L
Causes gastrointestinal illness; certain strains (e.g., O157:H7) can cause severe kidney failure and death.
Common source: Fecal contamination from humans or animals entering the water supply
EPA limit: Zero (no E. coli permitted in drinking water)
Hair loss, nail brittleness, and nervous system damage at elevated concentrations.
Common source: Natural geological deposits, mining discharges, oil refinery waste
EPA limit: 0.05 mg/L (50 ppb)
Water Systems Serving York
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| YORK WATER CO | PA7670100 | Surface Water | 206,762 | 22 |
| WEST MANCHESTER TWP AUTH | PA7670101 | Groundwater | 9,960 | 61 |
| FRANKLIN SYSTEM YORK WATER | PA7280045 | Surface Water | 4,400 | 77 |
| AMBLEBROOK | PA7010066 | Groundwater | 450 | 15 |
| WILLIAMS GROVE MHP | PA7210034 | Groundwater | 282 | 18 |
| WESTERN CUMBERLAND WATER SYS | PA7010038 | Groundwater | 275 | 11 |
| CARROLL VALLEY WATER SYSTEM | PA7010033 | Groundwater | 267 | 3 |
| MT VIEW TERRACE MHP | PA7210059 | Groundwater | 179 | 22 |
| EASTERN CUMBERLAND WATER SYS | PA7010044 | Groundwater | 150 | 16 |
| COUNTRY VIEW MANOR YWC | PA7670129 | Groundwater | 125 | 58 |
| HOUSTON RUN COMMUNITY | PA7360183 | Groundwater | 50 | 29 |
| ZEIGLER MHP | PA7670096 | Groundwater | 46 | 47 |
| WHERLEY PARK | PA7670066 | Groundwater | 34 | 8 |
Concerned About Your Water?
A home water filter can remove common contaminants. NSF-certified filters are tested against EPA standards.
Consider a reverse osmosis system for comprehensive filtration or a carbon filter for basic improvement.
Other Cities in Pennsylvania
Data Sources
Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). Data includes all recorded violations for active community water systems.