Household water treatment in Santa Clara, CA.

The City of Santa Clara Water Utility draws from 20 of its own wells, 500 to 900 feet deep, and buys treated water from Valley Water's Rinconada plant and from the SFPUC Hetch Hetchy system. Hetch Hetchy water typically serves the part of the city north of Highway 101.

Three sources, three different waters in Santa Clara

The city's 2024 water quality report lists well water hardness at an average of 246 ppm, Valley Water at 111 ppm and Hetch Hetchy water at 57 ppm. North of 101 the Hetch Hetchy supply is soft on average, so a softener is not always the answer there. South of 101 the city's deep wells carry most of the mineral load.

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 Santa Clara 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

In Santa Clara we look at which side of 101 you are on and what your utility delivers there before recommending anything, then install at the main line, usually in the garage.