Water Softeners & Whole House Water Filters in Stockton, CA
Fewer water spots, no chlorine smell in the shower, and drinking water you’ll actually drink. Stockton has two big water providers, and they treat water differently. We figure out which one serves your street, then test.
What you’ll notice
- Nearly eliminates water spottingon dishes, glasses and shower glass
- Softer-feeling skin & hairsoap rinses clean
- Soap & detergent go furtherlaundry tests used half the detergent (WQRF)
- Water heater & appliances last longerless scale inside
- No more bottled water runsRO drinking water at the sink
- Better-tasting coffee & iceless chlorine taste
Spots on your dishes or a pool smell in the shower in Stockton? That’s hardness and disinfectant, and both are fixable.
Ask two Stockton neighbors about their water and you may get two different answers, because Stockton is served by two main utilities. California Water Service (Cal Water) runs the Stockton District, and the City of Stockton Municipal Utilities Department (MUD) serves roughly 180,000 people in north and south Stockton. Your water bill tells you which one you have.
The differences matter for equipment. Cal Water’s Stockton system reports a wide hardness range and uses free chlorine. The City of Stockton blends treated surface water from its Delta Water Treatment Plant and Stockton East Water District with city wells, and it switched its residual disinfectant from chlorine to chloramine (chlorine combined with ammonia) in 2015. Chloramine lasts longer in the pipes but takes a different kind of carbon to filter, so a whole house water filter has to be sized for it.
Just moved from the Bay Area and your skin feels drier? Many people notice it. San Francisco’s water averaged 62 ppm (parts per million) of hardness in 2025, and EBMUD describes its water as soft to moderately hard [SFPUC 2025 Annual Water Quality Report] [EBMUD water quality FAQs]. Valley tap water is often harder, and the chlorine or chloramine used to disinfect city water can dry out skin and hair. A water softener takes care of the hardness, and whole-house carbon filtration reduces chlorine at every tap.
What Stockton’s water reports say
- Cal Water Stockton (2024 report): total hardness 23–290 ppm, averaging 150 ppm. Free chlorine averaged 0.88 ppm. [Cal Water Stockton District 2024 Water Quality Report]
- Cal Water Stockton: arsenic averaged 4 ppb (max 7.7 ppb), hexavalent chromium 2.5 ppb (up to 8.4 ppb), and nitrate 2.2 ppm (max 8.5 ppm). [Cal Water Stockton District 2024 Water Quality Report]
- City of Stockton MUD (2024 report): water comes from the Delta Water Treatment Plant, Stockton East Water District and city wells. City well water showed arsenic of 2.6–6.4 ppb (average 4.8 ppb), under the 10 ppb standard. [City of Stockton MUD 2024 Drinking Water Quality Report]
- Disinfection: the City of Stockton converted its residual disinfection from chlorine to chloramine in 2015. [City of Stockton report on its chloramine conversion]
These are system-wide averages and ranges from the public reports linked above. Your home’s water can differ by street and source, so we test at your tap before recommending anything.
Local water challenges in Stockton
- Hardness that ranges from soft to hard depending on your source
- Chlorine or chloramine taste, depending on your utility
- Low-level arsenic, chromium-6 and nitrate that families want an extra layer against
- Scale on fixtures and in water heaters
How we help Stockton homes
For Cal Water homes on the harder end, we usually pair a water softener or salt-free conditioner with a whole house carbon filter. For City of Stockton homes on chloramine, we size a catalytic carbon water filter built for chloramine. Either way, under-sink reverse osmosis is the drinking-water layer for families who want to reduce arsenic and chromium-6 further. RO can reduce chromium-6. According to the California State Water Board, “RO is a mature and viable technology for hexavalent chromium removal.” [California State Water Board, Hexavalent Chromium MCL Initial Statement of Reasons] Ask us about a free water test. For nitrate, whole-house anion exchange is our primary method, with RO as a drinking-water option. Big Blue cartridge filters and backwashing tanks are both on the table.
From a Stockton customer
“Price was also much lower than the other companies”
— Jo B., Stockton (Yelp)
What our customers say
“I had Liquid Solutions come out today and service my softener. I met with Candido the technician. He was very professional. He explained everything he was doing, and showed me the results of his testing. He is very personable and I enjoyed his company.”
Mark Smith
“We have enjoyed our water treatment service from Liquid Solutions for over 20 years. Our service guy Candito was very good at explaining everything to me. He took the time to go over how it all worked, what he checked…”
Terry Paff
Recent Google reviews of Liquid Solutions Inc. Google doesn’t show reviewers’ towns, so we don’t claim these are from Stockton. 4.9 · 281 Google reviews
Free water test / estimate
We reply during business hours (Mon–Fri, 9 AM–4 PM). Prefer to talk? Call (209) 523-5921.
Why book with us
- Licensed
- Bonded
- Workers' comp
- Liability
- Family-owned since 1996
- CSLB #811243
Office: (209) 523-5921
Sales: (209) 645-1151
Text: (209) 821-4777
Stockton water FAQs
Is Stockton water hard?
It depends on your utility and source. Cal Water’s 2024 Stockton report shows hardness from 23 to 290 ppm, averaging 150 ppm. A free test at your tap settles it.
Which water filter works on City of Stockton water?
The City of Stockton disinfects with chloramine (it converted in 2015). Chloramine needs catalytic carbon, sized for your home’s flow, to reduce taste and smell. A standard chlorine cartridge won’t do as much.
What about arsenic or chromium-6 in Stockton water?
Both providers report low levels; Cal Water’s 2024 report shows arsenic averaging 4 ppb and chromium-6 averaging 2.5 ppb. Families who want to reduce them further usually add under-sink reverse osmosis for drinking water. RO can reduce chromium-6; according to the California State Water Board, RO is a mature and viable technology for hexavalent chromium removal. Ask us about a free water test.
Do you really come out to Stockton from Modesto?
Yes. Stockton is one of our main service areas. The same family-owned team tests, installs and services your system.
How much does water treatment cost in Stockton?
It depends on your home’s size and what your water test shows. We start with a free in-home water test in Stockton, then give you a written, no-pressure estimate for the softener, catalytic carbon filter or RO your water calls for. Financing is available through Enhancify, including 0% for 21 months on approved credit (OAC). See terms (opens in a new tab) As an Enhancify.com Service Provider earn from qualifying purchases.
How do I know if I’m on Cal Water or City of Stockton water?
Check who sends your water bill. Cal Water and the City of Stockton’s Municipal Utilities Department serve different parts of town, and they disinfect differently (the city uses chloramine). We confirm it before recommending a filter.
Popular services in Stockton
- Water softener
- Salt-free conditioner
- Whole house water filter
- Reverse osmosis
- Sediment filter
- Free water test
On a private well near Stockton? See well water treatment for iron, manganese, sulfur, nitrate, arsenic, low pH, sediment and bacteria.
Free Water Test + No-Pressure Estimate
Call (209) 523-5921 (office / scheduling) or (209) 645-1151 (sales), text (209) 821-4777, or message us online.
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