MyCleanWater

Larkspur, California Water Quality Report

Water quality data for 1 water system serving 316 people.

100
Excellent
out of 100

Water Source

1
Water System
316
People Served
Ground water
Water Source

Detected Contaminants

No contaminant data available for this location.

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Compliance & Violations

Resolved Violations (24)

3D

Apr 1, 2025 — Apr 30, 2025

minor

3D

Apr 1, 2025 — Apr 30, 2025

minor

22

Oct 1, 2015 — Oct 31, 2015

critical

22

Oct 1, 2015 — Oct 31, 2015

critical

23

Aug 1, 2011 — Aug 31, 2011

moderate

+ 19 more resolved violations

Frequently Asked Questions

Is Larkspur tap water safe to drink?

Larkspur's water meets all EPA maximum contaminant levels. However, 0 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.

What contaminants are in Larkspur tap water?

0 contaminants have been detected in Larkspur's water supply across 1 water system. See the full contaminant table above for details.

How can I improve my water quality in Larkspur?

Install a water filter rated for the specific contaminants found in Larkspur's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.