MyCleanWater

Rockville, Virginia Water Quality Report

Water quality data for 165 water systems serving 72,337 people.

100
Excellent
out of 100

Water Source

165
Water Systems
72K
People Served
Surface water, Ground water
Water Source

Detected Contaminants

ContaminantDetected LevelEPA Limit (MCL)Health Guideline% of LimitStatus
lithium14.0 No federal limit10.0 ug/L(EPA/USGS HBSL)
140%
Above guideline
PFBS0.005 No federal limit2000.0 ug/L(EPA Health Advisory)
0%
Below 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

Recommended Water Filters

Based on the contaminants detected in your water supply, these filtration systems are recommended:

Reverse Osmosis (RO)

Reverse osmosis systems remove up to 99% of PFAS compounds. Recommended for homes with detected PFAS.

Up to 99% PFAS removal

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Compliance & Violations

Resolved Violations (1000)

27

Sep 1, 2025 — Sep 30, 2025

moderate

27

Aug 1, 2025 — Aug 31, 2025

moderate

3A

Aug 1, 2025 — Aug 31, 2025

minor

3A

Aug 1, 2025 — Aug 31, 2025

minor

27

Aug 1, 2025 — Aug 31, 2025

moderate

+ 995 more resolved violations

Frequently Asked Questions

Is Rockville tap water safe to drink?

Rockville's water meets all EPA maximum contaminant levels. However, 4 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.

What contaminants are in Rockville tap water?

4 contaminants have been detected in Rockville's water supply across 165 water systems. See the full contaminant table above for details.

How can I improve my water quality in Rockville?

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

Does Rockville have any water quality violations?

Yes, Rockville currently has 368 active violations. See the violations section above for details.