Household water treatment in North Potomac, Maryland.

North Potomac is supplied by WSSC Water's Potomac plant, and WSSC's 2025 report lists PFOA in that water at a highest level of 3.7 ng/L, ranging from 1.8, under the federal limit of 4.0 that applies from 2029.

What WSSC reports on PFAS

WSSC has tracked PFAS at both of its plants since January 2020 and posts quarterly results online, including unregulated PFBA averaging 3.3 ng/L in Potomac tap water in 2025. A North Potomac visit starts with those published results and your questions about them.

The way we work does not change from house to house. We look up the public data on your water, tell you what your home actually needs, and put it in for one all-in price.

What we fit in North Potomac homes

• A softener and carbon filter for the whole house, fitted on your main line, as the flagship bundle starting at $2,699 installed.
• Reverse osmosis under the sink for drinking water, and the part of the setup that deals with PFAS.

Done locally

North Potomac systems are planned around what your household wants from its drinking water and its hard Potomac supply.