MyCleanWater

Washington, District of Columbia Water Quality Report

Water quality data for 12 water systems serving 670,567 people.

45
Poor
out of 100

Water Source

12
Water Systems
671K
People Served
Surface water, Ground water
Water Source

Detected Contaminants

ContaminantDetected LevelEPA Limit (MCL)Health Guideline% of LimitStatus
lithium12.0 No federal limit10.0 ug/L(EPA/USGS HBSL)
120%
Above guideline
PFHxA0.005 No federal limit1000.0 ug/L(EWG)
0%
Below guideline
PFPeA0.006 No federal limit1000.0 ug/L(EWG)
0%
Below guideline

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Compliance & Violations

Active Violations (17)

52

Jan 1, 2025

moderate

52

Jan 1, 2025

moderate

4H

Nov 16, 2024

minor

4H

Nov 16, 2024

minor

4H

Nov 16, 2024

minor

4H

Nov 16, 2024

minor

2E

Oct 17, 2024

critical

76

Sep 23, 2024

minor

2A

Sep 5, 2024

critical

34

Sep 1, 2024

moderate

76

Apr 15, 2024

minor

45

Mar 31, 2012

critical

45

Mar 31, 2012

critical

45

Mar 31, 2012

critical

45

Nov 19, 2010

critical

45

Nov 19, 2010

critical

45

Nov 19, 2010

critical

Resolved Violations (483)

75

Sep 18, 2025

minor

41

Sep 1, 2025 — Sep 30, 2025

critical

02

Jul 1, 2025 — Sep 30, 2025

critical

72

Jul 1, 2025

minor

72

Jul 1, 2025

minor

+ 478 more resolved violations

Frequently Asked Questions

Is Washington tap water safe to drink?

Washington's water meets all EPA maximum contaminant levels. However, 3 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.

What contaminants are in Washington tap water?

3 contaminants have been detected in Washington's water supply across 12 water systems. See the full contaminant table above for details.

How can I improve my water quality in Washington?

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

Does Washington have any water quality violations?

Yes, Washington currently has 70 active violations. See the violations section above for details.