What's in Montgomery County, MD tap water?
Most of the DC metro area drinks treated Potomac River water. Because that surface water is heavily chlorinated to stay safe across a long distribution system, the contaminants that most often exceed EWG's stricter health guidelines here are chlorination byproducts, alongside unregulated contaminants like PFAS and hexavalent chromium.
"× over" compares the detected level to EWG’s stricter health guideline, not the federal legal limit.
Your tap water is legal. That doesn't make it clean.
Enter any U.S. zip code to see your water utility and the contaminants in its supply. For DC-metro utilities we show levels measured against the stricter EWG health guideline, not just the legal limit.
DC-metro levels from the EWG Tap Water Database & utility Consumer Confidence Reports; nationwide results from EPA SDWIS records. Utilities shown are in legal EPA compliance. “× over” compares the detected level to EWG's stricter health-based guideline, not the federal legal limit.
Removing these contaminants in Montgomery County
A reverse osmosis system is the most effective way to reduce every contaminant class above at the point of use. The Sanavia Hydra installs under your kitchen sink and is NSF-certified to remove up to 99% of dissolved contaminants. Montgomery County is about 18 miles from our Arlington base, well inside our service area.
Montgomery County water quality FAQ
Is Montgomery County, MD tap water safe to drink?
Public water in Montgomery County meets federal EPA legal limits. But "legal" is not the same as "clean": across the Potomac River watershed, independent testing routinely finds contaminants like Total trihalomethanes (TTHMs) and Haloacetic acids (HAA5) above EWG's stricter health guidelines. Enter your zip code above to see your exact utility's record.
What contaminants are common in Montgomery County water?
For the Potomac River watershed, the contaminants that most often exceed health guidelines are Total trihalomethanes (TTHMs), Haloacetic acids (HAA5), Hexavalent chromium (chromium-6), PFAS (forever chemicals), Lead (from older service lines). Your specific levels depend on your utility, which you can look up by zip code above.
Does Sanavia install reverse osmosis systems in Montgomery County?
Yes. Montgomery County is roughly 18 miles from our Arlington base and inside our service area. A Sanavia Hydra reverse osmosis system installs under your sink and is NSF-certified to reduce every contaminant class above, and we offer a free in-home water test.