What's in St. Mary's County, MD tap water?
Maryland's Eastern Shore and Southern Maryland sit on coastal-plain aquifers. That groundwater commonly carries naturally occurring arsenic and radionuclides, iron and manganese, and nitrate from farming, with saltwater intrusion a growing concern near the Chesapeake Bay.
Larger areas have more than one water system. Enter your exact zip code below for your utility’s own EPA record and EWG report.
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 St. Mary's 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. St. Mary's County is about 55 miles from our Arlington base, well inside our service area.
St. Mary's County water quality FAQ
Is St. Mary's County, MD tap water safe to drink?
Public water in St. Mary's County meets federal EPA legal limits. But "legal" is not the same as "clean": across the Coastal-plain aquifers, independent testing routinely finds contaminants like Arsenic (naturally occurring) and Radium & radionuclides (naturally occurring) above EWG's stricter health guidelines. Enter your zip code above to see your exact utility's record.
What contaminants are common in St. Mary's County water?
For the Coastal-plain aquifers, the contaminants that most often exceed health guidelines are Arsenic (naturally occurring), Radium & radionuclides (naturally occurring), Nitrate (agricultural runoff), PFAS (forever chemicals), Total trihalomethanes (where chlorinated). Your specific levels depend on your utility, which you can look up by zip code above.
Does Sanavia install reverse osmosis systems in St. Mary's County?
Yes. St. Mary's County is roughly 55 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.