PORTSMOUTH CITY

PORTSMOUTH, OH · ~40,475 people served

Check your exact address → PORTSMOUTH overview

Good

PurityRadar safety score

PWSID

OH7300111

State

Ohio

City

PORTSMOUTH

Population served

40,475

Primary source

Surface water

Score history

▼ 17 points — the score moved from 100 to 83 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 83

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 Dec 2023). Levels in parts per trillion (ppt).

PFOA

Perfluorooctanoic acid

5.4 ppt

limit 4 ppt

Above EPA limit · 1.4×

PFBS

3.5 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

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

Reporting · EPA contaminant 5200 began Jul 2025 Unaddressed

Other · EPA contaminant 7000 began Oct 2021 Unaddressed

Other · EPA contaminant 7000 began Feb 2020 Unaddressed

Other · EPA contaminant 7000 began Aug 2022 Resolved

Treatment technique · Bromate health-based began Oct 2002 Resolved

Recent enforcement actions

State action · SIE Oct 2025
State action · SIA Oct 2025
State action · SOX Jun 2023
State action · SIA Aug 2022
State action · SIA Oct 2021
State action · SIA Feb 2020
State action · SOX Dec 2007
State action · SIF Feb 2003

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

Arsenic

1 station · latest Sep 2021

2.48 · max 2.48 ug/L · 1

Manganese

1 station · latest Sep 2021

75.4 · max 75.4 ug/L · 1

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 OH7300111 — 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.