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Water system · PWSID PA5020034

WESTERN ALLEGHENY COUNTY MUN A

OAKDALE, PA · ~19,031 people served

Check your exact address → OAKDALE overview
85
Excellent
PurityRadar safety score

PWSID

PA5020034

State

Pennsylvania

City

OAKDALE

Population served

19,031

Primary source

SWP

Score history

▼ 15 points — the score moved from 100 to 85 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 85

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 Jun 2025). Levels in parts per trillion (ppt).

PFOS

Perfluorooctanesulfonic acid

5.2 ppt

limit 4 ppt

Above EPA limit · 1.3×

PFHxS

Perfluorohexanesulfonic acid

3.7 ppt

limit 10 ppt

Below EPA limit

Lithium

9,660 ppt

limit —

No federal limit

Violations & enforcement

37

Violations on record

0

Unaddressed

7

Health-based

71

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Nov 2025. Official EPA record →

Other · EPA contaminant 7500 began Oct 2025 Resolved
Reporting · Lead & Copper Rule began Sep 2025 Resolved
Treatment technique · Lead & Copper Rule health-based began Sep 2025 Resolved
Other · EPA contaminant 7500 began Sep 2024 Resolved
Treatment technique · Lead & Copper Rule health-based began Aug 2024 Resolved
Reporting · Lead & Copper Rule began Aug 2024 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jul 2016 Resolved
Monitoring & reporting · EPA contaminant 0200 began Sep 2015 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jul 2015 Resolved
Monitoring & reporting · EPA contaminant 0999 began Apr 2015 Resolved
Monitoring & reporting · EPA contaminant 0200 began Apr 2015 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2015 Resolved

Recent enforcement actions

  • State action · SIA Nov 2025
  • State action · SOX Nov 2025
  • State action · SIE Nov 2025
  • State action · SIF Nov 2025
  • State action · SFJ Nov 2025
  • State action · SFJ Nov 2025
  • State action · SIE Nov 2025
  • State action · SIF Oct 2024

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.

ContaminantMedian · max · samples

Copper

5 stations · latest Apr 2024

2.48 · max 6.54 ug/L · 12

Manganese

5 stations · latest Apr 2024

403 · max 1,540 ug/L · 12

Nitrate

5 stations · latest Apr 2024

0.51 · max 0.8 mg/L · 6

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 PA5020034 — 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.