MyCleanWater

Montesano, Washington Water Quality Report

Water quality data for 9 water systems serving 16,157 people.

100
Excellent
out of 100

Water Source

9
Water Systems
16K
People Served
Ground water
Water Source

Detected Contaminants

No contaminant data available for this location.

Get a Free Water Quality Consultation

Connect with a certified water treatment professional in Montesano, Washington.

No spam. We connect you directly with local water treatment professionals.

Get Water Quality Alerts

Be the first to know when water quality changes in Montesano.

Free alerts. Unsubscribe anytime. We never share your information.

Compliance & Violations

Resolved Violations (500)

71

Jul 1, 2025

minor

71

Jul 1, 2025

minor

71

Jul 1, 2025

minor

71

Jul 1, 2025

minor

71

Jul 1, 2025

minor

+ 495 more resolved violations

Frequently Asked Questions

Is Montesano tap water safe to drink?

Montesano'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 Montesano tap water?

0 contaminants have been detected in Montesano's water supply across 9 water systems. See the full contaminant table above for details.

How can I improve my water quality in Montesano?

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

Does Montesano have any water quality violations?

Yes, Montesano currently has 7 active violations. See the violations section above for details.