HILLSBORO-CHERRY GROVE

HILLSBORO, OR · ~1,628 people served

Check your exact address → HILLSBORO overview

100

Excellent

PurityRadar safety score

PWSID

OR4100985

State

Oregon

City

HILLSBORO

Population served

1,628

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 Jul 2025. Official EPA record →

Other · EPA contaminant 7000 began Jul 2025 Resolved

Monitoring & reporting · EPA contaminant 0200 began Jul 2023 Resolved

Monitoring & reporting · EPA contaminant 0300 began Jul 2023 Resolved

Monitoring & reporting · EPA contaminant 0200 began Jul 2023 Resolved

Monitoring & reporting · EPA contaminant 0300 began Aug 2019 Resolved

Monitoring & reporting · EPA contaminant 0200 began Aug 2019 Resolved

Monitoring & reporting · EPA contaminant 0300 began Oct 2014 Resolved

Monitoring & reporting · EPA contaminant 0200 began Oct 2014 Resolved

Monitoring & reporting · EPA contaminant 0200 began Dec 2009 Resolved

Monitoring & reporting · EPA contaminant 0300 began Dec 2009 Resolved

Recent enforcement actions

State action · SOX Jul 2025
State action · SOX Sep 2023
State action · SOX Sep 2019
State action · SOX Dec 2014
State action · SOX Aug 2010
State action · SIA Feb 2010
State action · SOX Feb 2010
State action · SOX Feb 2010

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

Nitrate

1 station · latest Dec 2022

0.16 · max 0.82 mg/l as N · 134

Manganese

1 station · latest Oct 2022

21 · max 130 ug/l · 25

Lead

1 station · latest Jul 2022

0.2 · max 0.8 ug/l · 7

Arsenic

1 station · latest Jul 2020

0.2 · max 0.31 ug/l · 3

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 OR4100985 — 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.