RIVER GROVE MUTUAL WATER ASSN

FELTON, CA · ~54 people served

Check your exact address → FELTON overview

100

Excellent

PurityRadar safety score

PWSID

CA4400621

State

California

City

FELTON

Population served

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

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 Jan 2025. Official EPA record →

Treatment technique · EPA contaminant 0200 health-based began Aug 2024 Resolved

Treatment technique · EPA contaminant 0800 health-based began Feb 2024 Resolved

Monitoring · Lead & Copper Rule began Mar 2023 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2023 Resolved

Treatment technique · EPA contaminant 0300 health-based began Jan 2023 Resolved

Treatment technique · EPA contaminant 0200 health-based began Jan 2023 Resolved

Treatment technique · EPA contaminant 0300 health-based began Jan 2022 Resolved

Treatment technique · EPA contaminant 0300 health-based began Dec 2021 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2019 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2019 Resolved

Monitoring & reporting · Thallium began Jan 2018 Resolved

Treatment technique · EPA contaminant 0200 health-based began Oct 2016 Resolved

Recent enforcement actions

State action · SOX Jan 2025
State action · SFL Oct 2024
State action · SOX Sep 2024
State action · SFO Jul 2024
State action · SOX Dec 2023
State action · SFL Nov 2023
State action · SOX May 2023
State action · SFL Mar 2023

This profile is built from EPA public records for system CA4400621 — 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.