DELORES LANE WATER SYSTEM

SANTA ROSA, CA · ~59 people served

Check your exact address → SANTA ROSA overview

100

Excellent

PurityRadar safety score

PWSID

CA4901346

State

California

City

SANTA ROSA

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 Mar 2024. Official EPA record →

Monitoring & reporting · Nitrate began Jul 2020 Resolved

Monitoring & reporting · Nitrate began Apr 2020 Resolved

Max contaminant level (MCL) · Arsenic health-based began Oct 2017 Resolved

Max contaminant level (MCL) · Total coliform health-based began Aug 2009 Resolved

Max contaminant level (MCL) · Total coliform health-based began May 2009 Resolved

Monitoring & reporting · Total coliform began Mar 2008 Resolved

Recent enforcement actions

State action · SOX Mar 2024
State action · SFL Dec 2020
State action · SFL Sep 2020
State action · SOX Jun 2018
State action · SFL Jan 2018
State action · SOX Sep 2009
State action · SFL Sep 2009
State action · SOX Jun 2009

This profile is built from EPA public records for system CA4901346 — 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.