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Water system · PWSID WA5390050

TWISP TOWN OF

Twisp, WA · ~1,055 people served

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

PWSID

WA5390050

State

Washington

City

Twisp

Population served

1,055

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

22

Violations on record

0

Unaddressed

0

Health-based

32

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Mar 2023. Official EPA record →

Monitoring & reporting · Nitrate began Jan 2022 Resolved
Monitoring & reporting · Nitrate began Jan 2022 Resolved
Monitoring · Lead & Copper Rule began May 2020 Resolved
Monitoring & reporting · Nitrate began Jan 2007 Resolved
Monitoring & reporting · Nitrate began Jan 2007 Resolved
Monitoring & reporting · EPA contaminant 2020 began Jan 2005 Resolved
Monitoring & reporting · EPA contaminant 2035 began Jan 2005 Resolved
Monitoring & reporting · EPA contaminant 2037 began Jan 2005 Resolved
Monitoring & reporting · EPA contaminant 2039 began Jan 2005 Resolved
Monitoring & reporting · Nitrate began Jan 2005 Resolved
Monitoring & reporting · EPA contaminant 2050 began Jan 2005 Resolved
Monitoring & reporting · EPA contaminant 2051 began Jan 2005 Resolved

Recent enforcement actions

  • State action · SOX Mar 2023
  • State action · SOX Mar 2023
  • State action · SOX Jun 2020
  • State action · SOX Jun 2008
  • State action · SOX Jun 2008
  • State action · SOX Jun 2008
  • State action · SOX Jun 2008
  • State action · SOX Jun 2008

This profile is built from EPA public records for system WA5390050 — 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.