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Water system · PWSID ID2350014

LEWISTON CITY OF

LEWISTON, ID · ~15,001 people served

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

PWSID

ID2350014

State

Idaho

City

LEWISTON

Population served

15,001

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

Latest detections from EPA’s UCMR5 monitoring (through Sep 2025). Levels in parts per trillion (ppt).

Lithium

34,900 ppt

limit —

No federal limit

PFBS

5.6 ppt

limit —

No federal limit

PFPeA

4.7 ppt

limit —

No federal limit

PFHxA

4.3 ppt

limit —

No federal limit

Violations & enforcement

9

Violations on record

9

Unaddressed

0

Health-based

0

Enforcement actions

From EPA ECHO (SDWIS). Official EPA record →

Monitoring & reporting · Barium began Jan 2023 Unaddressed
Monitoring & reporting · Cadmium began Jan 2023 Unaddressed
Monitoring & reporting · Chromium (total) began Jan 2023 Unaddressed
Monitoring & reporting · Selenium began Jan 2023 Unaddressed
Monitoring & reporting · EPA contaminant 1036 began Jan 2023 Unaddressed
Monitoring & reporting · Beryllium began Jan 2023 Unaddressed
Monitoring & reporting · EPA contaminant 1075 began Jan 2023 Unaddressed
Monitoring & reporting · EPA contaminant 1085 began Jan 2023 Unaddressed
Monitoring & reporting · Antimony began Jan 2023 Unaddressed

This profile is built from EPA public records for system ID2350014 — 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.