Columbia Valley Water District

Maple Falls, WA · ~2,648 people served

Check your exact address → Maple Falls overview

100

Excellent

PurityRadar safety score

PWSID

WA5366110

State

Washington

City

Maple Falls

Population served

2,648

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

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Oct 2016. Official EPA record →

Other · EPA contaminant 7000 began Jul 2016 Resolved

Other · EPA contaminant 7000 began Jul 2015 Resolved

Other · EPA contaminant 7000 began Jul 2014 Resolved

Other · EPA contaminant 7000 began Jul 2011 Resolved

Other · EPA contaminant 7000 began Jul 2010 Resolved

Monitoring & reporting · Nitrate began Jan 2005 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 1998 Resolved

Recent enforcement actions

State action · SOX Oct 2016
State action · SOX Sep 2015
State action · SOX Sep 2014
State action · SOX Sep 2011
State action · SOX Oct 2010
State action · SOX Apr 2006
State action · SOX Apr 2006
State action · SOX Jan 2006

This profile is built from EPA public records for system WA5366110 — 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.