Household water treatment in Germantown, Maryland.

Germantown homes on WSSC Water are supplied from the Potomac Water Filtration Plant, and WSSC's 2025 tap analysis for that plant lists hardness at a yearly average of 154 mg/L, with readings from 79 to 213 mg/L.

154 mg/L hardness, on average

Germantown draws from the Potomac plant, where WSSC measured calcium alone at an average of 46 mg/L in 2025. That mineral load is what leaves the white film on glass shower doors and the ring in a kettle, and a Germantown assessment starts from those published numbers.

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 Germantown 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

Germantown systems go on the main line where WSSC water enters the house, sized to the hardness your plant reports.