Water Filtration in Sunnyvale, CA

Our Sunnyvale work is run out of our San Jose office at 630 Giguere Court, and we cover Sunnyvale along with Mountain View, Santa Clara, Cupertino, Los Altos, Los Altos Hills, Palo Alto, Menlo Park, San Jose, Campbell, Los Gatos, Saratoga, Milpitas, Morgan Hill, Fremont, Redwood City, San Carlos, San Francisco and Tracy. If you are not sure whether we reach you, call us and ask.

That’s exactly where we come in. We’re experts in water treatment and highly familiar with the water quality across the entire Bay Area, Silicon Valley, Northern California, and the Central Coast. We've studied the local water reports and understand the unique challenges in each region—from hard water to high contaminant levels. We’ll assess your specific needs and recommend the right system to give you clean, high-quality water at home.

No, not by Santa Clara County standards. Sunnyvale's potable supply is entirely imported surface water. North of El Camino Real it is Hetch Hetchy at about 3.5 grains per gallon, which is soft. The southern part of the city is on treated Valley Water at about 5.7 grains per gallon, which is moderately hard. A small area east of Grant Road near Highway 85 is served by California Water Service on a blend of 72 percent Valley Water and 28 percent well water, which can run harder. The city does operate wells in the southern part of town, but Valley Water's retailer map lists those as irrigation supply rather than drinking water. For comparison, Santa Clara's city wells average 17.1 grains per gallon and San Jose Water's groundwater averages 16.8, so Sunnyvale is three to five times softer than its neighbours on the well side. Below about 7 grains per gallon a softener has little to do. Supply and disinfectant figures come from Valley Water's retailer map, and hardness from the 2025 water quality reports. We will measure your own tap at no charge.

Our water softener and filtration system are installed at your home’s main water entry point—before the water flows through the rest of your plumbing. From there, it filters and softens the water, delivering noticeable improvements throughout your entire home.

Because both of Sunnyvale's supplies are chloraminated rather than chlorinated, so however the blend reaches your street, you are drinking chloraminated water. Chloramine is chlorine combined with ammonia. It is more stable than free chlorine, which is exactly why it is used across a system the size of Hetch Hetchy, and exactly why it is harder to remove at your tap. Ordinary activated carbon, which is what a pitcher filter or a refrigerator cartridge uses, adsorbs free chlorine quickly but reduces chloramine poorly, because chloramine has to be catalytically decomposed rather than simply adsorbed. That takes catalytic carbon and considerably more contact time than a small cartridge can provide. Which is why your filtered water can still taste like a pool. What works: an under-sink reverse osmosis system for drinking and cooking water, catalytic carbon under the sink or for the whole house if the shower is the complaint rather than the glass, or both. Our Exchanger Pro RCC and Exchanger Elite RCC systems include catalytic carbon filtration that reduces chlorine, chloramine and ammonia at every tap. If you keep fish, chloramine does not dissipate by letting water stand out overnight the way free chlorine does, and it is lethal to fish, so a dechlorinator rated only for chlorine will not protect a tank in Sunnyvale.

All of our systems are designed to be a long-term solution, with a lifespan of up to 15-20 years. You are covered under a 10 year warranty that covers all parts and labor.

All our water softener and reverse osmosis systems are made in the USA and tested & certified by the Water Quality Association against NSF/ANSI Standards.