How many Maryland water systems are over the federal PFAS limit?

16 public water systems in Maryland had at least one PFAS above a federal maximum contaminant level in EPA UCMR 5 testing (2023–2025). Each one is listed on this page with its actual levels and the filter that removes them.

PFAS in Maryland water

The EPA tested public water systems across Maryland for 29 PFAS. In 16 of them, at least one came back above a federal limit. Find your system below — you'll get the actual levels, our plain verdict on each compound, and the filter that genuinely removes it. We sell nothing.

Not listed? Your system may not have been sampled, or nothing exceeded a limit — see the national picture.

Boonsboro - Keedysville 1 over the limit
City Of Aberdeen 2 over the limit
City Of Fruitland 1 over the limit
City Of Salisbury 2 over the limit
City Of Taneytown 2 over the limit
City Of Westminster, Md 2 over the limit
Glenelg Country School 1 over the limit
Maryland American Water Company 2 over the limit
New Life Christian School 2 over the limit
Town Of Elkton 2 over the limit
Town Of Hampstead 2 over the limit
Town Of Manchester 1 over the limit
Town Of Middletown 2 over the limit
Town Of Mount Airy 2 over the limit
Town Of Poolesville 2 over the limit
Town Of Thurmont 2 over the limit

Source: US EPA UCMR 5 occurrence data, 2023–2025. · All states