UPPER TWIN LAKES WATER COMPANY INC

RATHDRUM, ID · ~227 people served

Check your exact address → RATHDRUM overview

100

Excellent

PurityRadar safety score

PWSID

ID1280194

State

Idaho

City

RATHDRUM

Population served

227

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 May 2025. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Dec 2025 Unaddressed

Treatment technique · Lead & Copper Rule health-based began Oct 2023 Resolved

Monitoring & reporting · Lead & Copper Rule began Oct 2020 Resolved

Monitoring & reporting · Nitrate began Jan 2018 Resolved

Monitoring · Lead & Copper Rule began Oct 2016 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 2011 Resolved

Monitoring & reporting · Lead & Copper Rule began Jul 2009 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 2009 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 2008 Resolved

Monitoring & reporting · Nitrate began Jan 2001 Resolved

Recent enforcement actions

State action · SOX May 2025
State action · SIE Nov 2023
State action · SOX Nov 2023
State action · SIA Nov 2023
State action · SOX Jun 2021
State action · SIE Nov 2020
State action · SIA Nov 2020
State action · SOX Feb 2019

This profile is built from EPA public records for system ID1280194 — 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.