the Bay Area

Clearer shower glass and better tasting water for homes across the Bay Area.

We soften and filter the water where it comes into the house, and put a reverse osmosis tap by the kitchen sink. The system is sized to your house, and you see one price before anything is ordered.

What you might be seeing around the house

In the Bay Area, it usually starts with one of these three. Each calls for a different fix, so we look at your water before we suggest anything.

Hard water, by the numbers

Gilroy's 2025 report puts average hardness at 237 ppm and Morgan Hill's at 234 mg/L, both on groundwater alone. San Jose Water's wells average 288 ppm and Cal Water's Los Altos wells 305 ppm. That is the scale on fixtures and inside water heaters across the South Bay.

Blends that change street to street

Most Bay Area utilities blend very hard groundwater with softer treated surface water. In the Tri-Valley, Zone 7's 2025 surface water measured 88 mg/L against 318 mg/L for its groundwater, so the water at your tap depends on the mix that reaches you.

Chloramine at most taps

Cal Water, Zone 7, Dublin San Ramon Services District and Pleasanton all list chloramine as their disinfectant, and San Jose Water uses chloramine and chlorine. It keeps water safe in the pipes and is also the taste and smell many homeowners want gone at the kitchen sink.

About Rapid Water Softeners • Close to home

A water company for Bay Area households

Rapid Water Softeners works with households across the Bay Area on the water that comes out of their taps. Some want the scale gone from the shower glass, some want a better glass of water from the kitchen, and some are on a well and want to know where to begin. We look at where your water comes from and what you are noticing, then suggest softening, carbon filtration, reverse osmosis, well treatment or a mix of them. You get a plain answer and a system sized to your house.

  • Picked for your water. What we suggest depends on your source, your house and what you are noticing.
  • Every tap in the house. A system at the main line treats the water before it reaches the showers, the sinks and the appliances.
  • A tap for drinking water. Reverse osmosis sits under the kitchen sink for the water you drink and cook with.
  • Straight answers. We tell you what we would do and why, and the work matches what we said.
Dual tank whole home water treatment system
How it goes, from the first call

A phone call, a plan, then the install

First we talk through what you are seeing at the taps. Then we tell you which system fits and what it costs. If you say yes, we put it in and show you how it works.

We talk about your water

Tell us whether you are on city water or a well, and what bothers you about it, from the kettle to the laundry. That tells us where to start.

You hear what fits

We lay out which system suits your house and your budget, and why. Ask as many questions as you like.

We put it in

Once you pick a system, we install it, check that it runs properly, and walk you through the few things it needs from you.

Under sink tankless reverse osmosis unit
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Whole house system on city water

$2,699

installed

Homes on a well get their own sizing and their own price.

  • Your water comes first, the quote comes after
  • Matched to your household and the water it goes through
  • One written price before any equipment is ordered
Get Your Free Water Assessment
Whole home water treatment system

This is one example setup. Yours gets sized once the assessment is done.

Things people ask us

Don't see yours? Add it to your assessment request and we will answer it on the call.

We give you a call and talk through your water together. By the end you know which system we would fit and what it costs. The assessment itself is free.

The written price is the one you pay. If something about your house would change it, we tell you before any work begins.

At the spot where your water line comes in. That is often the basement, a utility room or the garage.

Floor space for the tanks, and enough room above to lift the cabinet lid and reach the bypass.

Keep the cabinet topped up. The setup notes explain it, and that is really all there is.

It does, sized another way. A private well shifts over the year, so it is set up differently from city water. We do both.

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The quieter part of the list

Some of it has no taste at all.

Chlorine

Often noticeable in a glass.

Chloramine

Harder to pick out.

PFAS

No taste to go on.

So the assessment begins with the report your utility puts out on Bay Area water, rather than a hunch.

Let's talk about your water.

We ask for your name, phone and email. We cover the rest on a short call.

(669) 322-2389

Call if that is easier than typing.

Email contact@rapidwatersofteners.com

Serving the Bay Area

Find out what your water is doing

The assessment costs nothing. Send your name and number, or give us a call.

Get Your Free Water Assessment

Or call (669) 322-2389

Check the towns we cover