NPS GGNRA

SAUSALITO, CA · ~18,447 people served

Check your exact address → SAUSALITO overview

100

Excellent

PurityRadar safety score

PWSID

CA2110350

State

California

City

SAUSALITO

Population served

18,447

Primary source

SWP

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 2018. Official EPA record →

Treatment technique · EPA contaminant 0200 health-based began Oct 2015 Resolved

Max contaminant level (MCL) · Total coliform health-based began Sep 2015 Resolved

Treatment technique · EPA contaminant 0200 health-based began Sep 2015 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Oct 2007 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Oct 2007 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Apr 2006 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Apr 2006 Resolved

Monitoring & reporting · Total coliform began Jan 2002 Resolved

Monitoring & reporting · Total coliform began Dec 2001 Resolved

Max contaminant level (MCL) · Total coliform health-based began Feb 1999 Resolved

Recent enforcement actions

State action · SOX Mar 2018
State action · SOX Dec 2015
State action · SFL Nov 2015
State action · SOX Nov 2015
State action · SOX Oct 2015
State action · SFL Oct 2015
State action · SOX Apr 2008
State action · SFL Apr 2008

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Nitrate

5 stations · latest Oct 2022

0.116 · max 1.25 mg/l as N · 132

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system CA2110350 — 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.