Yurok - Terwer Water System

Klamath, CA · ~300 people served

Check your exact address → Klamath overview

100

Excellent

PurityRadar safety score

PWSID

090605143

State

California

City

Klamath

Population served

300

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

161

Violations on record

Unaddressed

Health-based

175

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Aug 2025. Official EPA record →

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

Monitoring & reporting · Lead & Copper Rule began Jan 2024 Unaddressed

Monitoring & reporting · Lead & Copper Rule began Jan 2023 Unaddressed

Monitoring · Lead & Copper Rule began Nov 2024 Resolved

Monitoring & reporting · EPA contaminant 0999 began Oct 2024 Resolved

Other · EPA contaminant 7000 began Jul 2024 Resolved

Monitoring · Lead & Copper Rule began May 2024 Resolved

Other · EPA contaminant 7500 began May 2024 Resolved

Monitoring & reporting · EPA contaminant 0999 began Apr 2024 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 2022 Resolved

Monitoring & reporting · Lead & Copper Rule began Jul 2016 Resolved

Recent enforcement actions

EPA/federal action · EOX Aug 2025
EPA/federal action · EIA Apr 2025
EPA/federal action · EIA Apr 2025
EPA/federal action · EOX Dec 2024
EPA/federal action · EOX Dec 2024
EPA/federal action · EOX Jun 2024
EPA/federal action · EOX Dec 2022
EPA/federal action · EOX Dec 2016

This profile is built from EPA public records for system 090605143 — 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.