PWSID
PA7670101
State
Pennsylvania
City
YORK
Population served
9,960
Primary source
Groundwater
Score history
▼ 22 points — the score moved from 100 to 78 on Jun 18, 2026, as newly published EPA data was incorporated.
2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.
PFAS & contaminant readings
Latest detections from EPA’s UCMR5 monitoring (through Apr 2025). Levels in parts per trillion (ppt).
PFOS
Perfluorooctanesulfonic acid
6.2 ppt
limit 4 ppt
Lithium
16,400 ppt
limit —
PFBS
3.6 ppt
limit —
Violations & enforcement
412
Violations on record
0
Unaddressed
1
Health-based
130
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement Apr 2025. Official EPA record →
Recent enforcement actions
- State action · SIA Apr 2025
- State action · SOX Apr 2025
- State action · SOX May 2024
- State action · SIA May 2024
- State action · SOX Apr 2024
- State action · SIA Mar 2024
- State action · SIF Sep 2023
- State action · SOX Aug 2023
Area water-quality monitoring
Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.
Nitrate
1 station · latest Jul 2021
Arsenic
1 station · latest Jul 2021
Copper
1 station · latest Jul 2021
Fluoride
1 station · latest Jul 2021
Lead
1 station · latest Jul 2021
Uranium
1 station · latest Jul 2021
Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.
This profile is built from EPA public records for system PA7670101 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.