Home/ Directory/ OR/ MILTON-FREEWATER, CITY OF

Water system · PWSID OR4100522

MILTON-FREEWATER, CITY OF

MILTON-FREEWATER, OR · ~7,145 people served

Check your exact address → MILTON-FREEWATER overview

Good

PurityRadar safety score

PWSID

OR4100522

State

Oregon

City

MILTON-FREEWATER

Population served

7,145

Primary source

Groundwater

Score history

▼ 28 points — the score moved from 100 to 72 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 72

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

PFOS

Perfluorooctanesulfonic acid

7.2 ppt

limit 4 ppt

Above EPA limit · 1.8×

PFHxS

Perfluorohexanesulfonic acid

3.2 ppt

limit 10 ppt

Below EPA limit

Lithium

9,500 ppt

limit —

No federal limit

Violations & enforcement

198

Violations on record

Unaddressed

Health-based

151

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jul 2024. Official EPA record →

Other · EPA contaminant 7000 began Jul 2024 Resolved

Monitoring · Lead & Copper Rule began Apr 2022 Resolved

Monitoring & reporting · EPA contaminant 3028 began Jan 2022 Resolved

Monitoring · Lead & Copper Rule began May 2021 Resolved

Monitoring & reporting · EPA contaminant 3028 began Jan 2021 Resolved

Monitoring & reporting · EPA contaminant 3014 began Oct 2020 Resolved

Monitoring & reporting · EPA contaminant 2031 began Jan 2020 Resolved

Monitoring & reporting · EPA contaminant 2005 began Jan 2020 Resolved

Monitoring & reporting · EPA contaminant 2015 began Jan 2020 Resolved

Monitoring & reporting · EPA contaminant 2010 began Jan 2020 Resolved

Monitoring & reporting · EPA contaminant 2020 began Jan 2020 Resolved

Monitoring & reporting · EPA contaminant 2032 began Jan 2020 Resolved

Recent enforcement actions

State action · SOX Jul 2024
State action · SOX Apr 2023
State action · SOX Apr 2023
State action · SOX Apr 2023
State action · SOX Apr 2023
State action · SOX Apr 2023
State action · SOX Apr 2023
State action · SOX Apr 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.

ContaminantMedian · max · samples

Atrazine

1 station · latest May 2020

14.2 · max 14.2 ng/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 OR4100522 — 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.