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Water system · PWSID OH3102612

CINCINNATI PUBLIC WATER SYSTEM

CINCINNATI, OH · ~750,200 people served

Check your exact address → CINCINNATI overview
79
Good
PurityRadar safety score

PWSID

OH3102612

State

Ohio

City

CINCINNATI

Population served

750,200

Primary source

Surface water

Score history

▼ 21 points — the score moved from 100 to 79 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 79

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

PFOS

Perfluorooctanesulfonic acid

6.1 ppt

limit 4 ppt

Above EPA limit · 1.5×

PFBA

5.1 ppt

limit —

No federal limit

PFBS

4.1 ppt

limit —

No federal limit

Violations & enforcement

No violations are on record for this system in EPA’s SDWIS/ECHO data.

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

6 stations · latest Dec 2024

36.9 · max 269 ug/L · 68

Copper

4 stations · latest Dec 2024

2.55 · max 8.98 ug/L · 43

Arsenic

4 stations · latest Dec 2024

2.41 · max 3.46 ug/L · 31

Fluoride

2 stations · latest Sep 2021

0.308 · max 0.451 mg/L · 14

Lead

2 stations · latest Dec 2024

5.4 · max 7.19 ug/L · 4

Nitrate

1 station · latest Jun 2023

0.51 · max 0.51 mg/L · 3

Uranium

2 stations · latest Nov 2020

0.54 · max 0.733 ug/l · 2

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 OH3102612 — 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.