GREATER JOHNSTOWN WA RIVERSIDE

JOHNSTOWN, PA · ~49,500 people served

Check your exact address → JOHNSTOWN overview

100

Excellent

PurityRadar safety score

PWSID

PA4110034

State

Pennsylvania

City

JOHNSTOWN

Population served

49,500

Primary source

Surface water

Score history

No change since tracking began Jun 18, 2026.

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

2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.

PFAS & contaminant readings

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Mar 2026. Official EPA record →

Reporting · Lead & Copper Rule began Feb 2026 Resolved

Monitoring & reporting · EPA contaminant 0999 began Jan 2026 Resolved

Monitoring & reporting · EPA contaminant 0200 began Jan 2026 Resolved

Monitoring & reporting · EPA contaminant 0300 began Sep 2025 Resolved

Monitoring & reporting · EPA contaminant 0300 began Apr 2024 Resolved

Monitoring & reporting · Chromium (total) began Jan 2024 Resolved

Monitoring & reporting · Cadmium began Jan 2024 Resolved

Monitoring & reporting · Fluoride began Jan 2024 Resolved

Monitoring & reporting · Selenium began Jan 2024 Resolved

Monitoring & reporting · EPA contaminant 1036 began Jan 2024 Resolved

Monitoring & reporting · Barium began Jan 2024 Resolved

Monitoring & reporting · EPA contaminant 0200 began Nov 2023 Resolved

Recent enforcement actions

State action · SOX Mar 2026
State action · SFJ Mar 2026
State action · SIE Feb 2026
State action · SIA Feb 2026
State action · SOX Feb 2026
State action · SOX Nov 2025
State action · SFJ Nov 2025
State action · SO8 Feb 2025

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

Manganese

1 station · latest Oct 2022

23.7 · max 31.4 ug/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 PA4110034 — 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.