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Water system · PWSID WA5372250

RICHLAND CITY OF

Richland, WA · ~106,499 people served

Check your exact address → Richland overview

Action needed

PurityRadar safety score

PWSID

WA5372250

State

Washington

City

Richland

Population served

106,499

Primary source

Surface water

Score history

▼ 66 points — the score moved from 100 to 34 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 34

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

PFOS

Perfluorooctanesulfonic acid

17 ppt

limit 4 ppt

Above EPA limit · 4.3×

PFOA

Perfluorooctanoic acid

10 ppt

limit 4 ppt

Above EPA limit · 2.5×

PFHxS

Perfluorohexanesulfonic acid

4.9 ppt

limit 10 ppt

Below EPA limit

PFPeA

15 ppt

limit —

No federal limit

PFHxA

12 ppt

limit —

No federal limit

PFBS

8.9 ppt

limit —

No federal limit

PFBA

6.6 ppt

limit —

No federal limit

PFHpA

5.8 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Mar 2019. Official EPA record →

Monitoring & reporting · EPA contaminant 2982 began Oct 2018 Resolved

Monitoring & reporting · EPA contaminant 2378 began Oct 2018 Resolved

Monitoring & reporting · EPA contaminant 2380 began Oct 2018 Resolved

Monitoring & reporting · EPA contaminant 2964 began Oct 2018 Resolved

Monitoring & reporting · EPA contaminant 2968 began Oct 2018 Resolved

Monitoring & reporting · EPA contaminant 2969 began Oct 2018 Resolved

Monitoring & reporting · EPA contaminant 2976 began Oct 2018 Resolved

Monitoring & reporting · EPA contaminant 2977 began Oct 2018 Resolved

Monitoring & reporting · EPA contaminant 2979 began Oct 2018 Resolved

Monitoring & reporting · EPA contaminant 2980 began Oct 2018 Resolved

Monitoring & reporting · EPA contaminant 2981 began Oct 2018 Resolved

Monitoring & reporting · EPA contaminant 2983 began Oct 2018 Resolved

Recent enforcement actions

State action · SOX Mar 2019
State action · SOX Sep 2015
State action · SOX Sep 2015
State action · SOX Jan 2008
State action · SOX Jan 2008
State action · SOX Jan 2008
State action · SOX Jan 2008
State action · SOX Jan 2008

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

2 stations · latest Oct 2024

0.00435 · max 0.00841 ug/L · 28

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 WA5372250 — 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.