H2O, INC

ARROYO GRANDE, CA · ~70 people served

Check your exact address → ARROYO GRANDE overview

100

Excellent

PurityRadar safety score

PWSID

CA4000741

State

California

City

ARROYO GRANDE

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 Oct 2024. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Oct 2024 Addressed

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

Monitoring & reporting · Total coliform began May 2005 Resolved

Monitoring & reporting · Total coliform began Mar 2004 Resolved

Monitoring & reporting · Total coliform began Oct 2003 Resolved

Monitoring & reporting · Lead & Copper Rule began Jul 1993 Resolved

Recent enforcement actions

State action · SFL Oct 2024
State action · SOX Dec 2021
State action · SFL Dec 2020
State action · SOX Jun 2005
State action · SIE Jun 2005
State action · SOX Jul 2004
State action · SOX Apr 2004
State action · SIE Apr 2004

This profile is built from EPA public records for system CA4000741 — 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.