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Water system · PWSID WA5374800

ROZA HEIGHTS WATER ASSN

Prosser, WA · ~110 people served

Check your exact address → Prosser overview
100
Excellent
PurityRadar safety score

PWSID

WA5374800

State

Washington

City

Prosser

Population served

110

Primary source

Groundwater

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

63

Violations on record

0

Unaddressed

0

Health-based

29

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement May 2018. Official EPA record →

Monitoring · Lead & Copper Rule began Apr 2018 Resolved
Monitoring & reporting · Total coliform began Sep 2015 Resolved
Monitoring & reporting · Lead & Copper Rule began Jan 2013 Resolved
Other · EPA contaminant 7000 began Jul 2012 Resolved
Monitoring & reporting · EPA contaminant 2977 began Jan 2008 Resolved
Monitoring & reporting · EPA contaminant 2976 began Jan 2008 Resolved
Monitoring & reporting · EPA contaminant 2979 began Jan 2008 Resolved
Monitoring & reporting · EPA contaminant 2964 began Jan 2008 Resolved
Monitoring & reporting · EPA contaminant 2968 began Jan 2008 Resolved
Monitoring & reporting · EPA contaminant 2380 began Jan 2008 Resolved
Monitoring & reporting · EPA contaminant 2969 began Jan 2008 Resolved
Monitoring & reporting · EPA contaminant 2946 began Jan 2008 Resolved

Recent enforcement actions

  • State action · SOX May 2018
  • State action · SOX Oct 2016
  • State action · SOX Oct 2015
  • State action · SOX Oct 2012
  • State action · SFJ Nov 2011
  • State action · SOX Nov 2011
  • State action · SOX Nov 2011
  • State action · SOX Nov 2011

This profile is built from EPA public records for system WA5374800 — 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.