Here's the fuller picture: alongside the PFAS concern, Pleasanton's well water is extremely hard — 356 to 387 milligrams per liter, or roughly 21 to 22.6 grains per gallon. So the typical Pleasanton home faces two water issues at once: trace contaminants residents read about, and hardness they can see crusted on every fixture.
What the City's PFAS Facility Does — and Doesn't — Do
The Stoneridge facility treats water from specific city wells using ion-exchange resin that captures PFAS compounds before the water enters distribution. It's a genuine, major improvement for the groundwater portion of the supply. But it treats the wells, not your home's pipes — and it doesn't soften water. The 80-percent Zone 7 portion of the blend has its own profile, and hardness passes through every treatment stage untouched.
A whole-home water filtration system at your meter adds the layer the municipal system can't: carbon and specialty media that polish taste and remove residual organics, paired with softening that takes 21-grain water down to near zero. One installation, both problems handled.
Hardness: The Problem You Can See
PFAS gets the headlines, but hardness does the daily damage. At 21-plus grains, scale forms fast — we pull heating elements from Pleasanton water heaters encased in mineral rock, and replace dishwasher inlet valves choked with grit in Kottinger Ranch and Pleasanton Heights homes. Faucet cartridges in Downtown Pleasanton lose flow within a couple of years.
Softened water changes the maintenance equation completely: heaters last longer, fixtures keep their flow, and the white film on glass shower doors in Kottinger Village bathrooms simply stops forming. Our water heater services pair naturally with filtration installs — protect the new heater from day one.
Filtration Across Pleasanton
We install and service filtration and softening systems in Kottinger Ranch, Pleasanton Heights, Downtown Pleasanton, and the Kottinger Village area — plus faucet and fixture installation, garbage disposal replacement, and emergency plumber response with 24/7 emergency service. Upfront pricing before any work begins.
Between the headlines and the hardness, Pleasanton water deserves treatment at your tap.
Frequently Asked Questions
**Is there PFAS in Pleasanton's water?**
PFAS compounds were detected in some city groundwater wells, which prompted the $16 million Stoneridge Well ion-exchange treatment facility that opened in September 2023. The city monitors and treats for these compounds, and homeowners wanting an extra layer of protection add point-of-entry filtration designed for PFAS-class contaminants.
What did the Stoneridge Well facility change? It added ion-exchange treatment to capture PFAS from affected city wells before distribution — a significant upgrade for the 20 percent of supply coming from municipal wells. It doesn't change the Zone 7 imported portion of the blend, and it doesn't soften the water.
Can a home filter actually remove PFAS? Certain media can: granular activated carbon and specialized ion-exchange resins are the technologies regulators and researchers point to for PFAS reduction, with reverse osmosis the most thorough for drinking water. We design systems around which contaminants you want targeted — there's no one-size cartridge for this.
With hardness over 20 grains, do I need a softener too? Almost certainly. At 21 to 22.6 grains per gallon, Pleasanton has some of the hardest municipal water in the Tri-Valley. Filtration handles taste and trace contaminants; only ion-exchange softening removes the hardness minerals destroying your heaters and fixtures. Most of our Pleasanton installs combine both.
For filtration designed for Pleasanton's water, contact California Plumbing Service. Call California Plumbing Service at 719-403-0539.
Need a Plumber in California?
Upfront pricing before any work begins. One call connects you with a local plumbing team.