BARON CANYON MUTUAL WATER CO.

SAN LUIS OBISPO, CA · ~81 people served

Check your exact address → SAN LUIS OBISPO overview

100

Excellent

PurityRadar safety score

PWSID

CA4000214

State

California

City

SAN LUIS OBISPO

Population served

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 Aug 2023. Official EPA record →

Monitoring & reporting · Nitrate began Jan 2022 Resolved

Monitoring & reporting · Lead & Copper Rule began Oct 2021 Resolved

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

Monitoring & reporting · Nitrate began Jan 2019 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 2019 Resolved

Monitoring & reporting · Lead & Copper Rule began Jul 2018 Resolved

Other · EPA contaminant 7000 began Jul 2005 Resolved

Recent enforcement actions

State action · SOX Aug 2023
State action · SFL Feb 2023
State action · SOX Sep 2022
State action · SFL Dec 2021
State action · SOX Dec 2020
State action · SFL Feb 2020
State action · SFL Jan 2020
State action · SFL Mar 2019

This profile is built from EPA public records for system CA4000214 — 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.