Free water test first
We test your actual water at home, show you what's in it, and confirm the right setup before you spend a dollar.
Whole home water systems $1,995+, offer ends Nov 30
San Diego Water Softener & Whole House Filtration Company
Clean, soft water in every tap. Professionally installed.
San Diego County tap water tests at 15 to 29 grains per gallon, among the hardest in California. Pure Coast tests your water free, then installs a softener, chlorine filter and reverse osmosis system built for it, usually in one visit. Veteran owned, backed by a lifetime limited warranty, and serving San Diego County, Temecula, Murrieta and Riverside.
Prefer to talk? Open 7 days, 8am to 6pm(619) 853-6087
Most popular system
Save $4,700+
Whole-House Water Softener + Filtration
Dealer $7,000+
$2,295
12x54 system
or from $30/month with financing
Hardware price. Installation quoted at your free consultation. View sizes and details →
- Mixed bed softening resinEnds scale, spots and dry skin
- Catalytic carbon filtrationRemoves chlorine and chloramine taste and smell
- Clack WS1 metered valveMade in the USA, 1" bypass included
- Lifetime limited warrantyPlus our 30-day guarantee
Veteran Owned
American Made
Lifetime Limited Warranty
NSF Certified
5-Star Rated
Book your free water consultation
Whole Home Water Systems $1,995+, from $30/month with financing. Offer ends Nov 30th. We'll call within 24 hours to schedule. No obligation.
You're all set!
Our local team will call within 24 hours to schedule your free water consultation and lock in your $1,995+ offer before Nov 30th. Want to talk sooner?
(619) 853-6087Preview mode: no webhook is set yet, so this test did not create a lead.
Rated and trusted
One flat price, nothing extra
Everything your San Diego home needs for clean, soft water
One system, one visit, one price. We handle the water test, the equipment and the install, then back your whole home system for life.
Complete whole home system
Softener, chlorine filtration and drinking water RO. Softer, cleaner water from every shower, sink and appliance.
Built for San Diego's hard water
County water tests at 15 to 29 grains per gallon, rated very hard. Every system is sized for it.
Installation included
Local techs install and program everything, usually in a single visit, with no surprise add-ons.
LifetimeLimited Warranty
NSFCertified materials
90miService radius
VeteranOwned and operated
Financing availableLow monthly payments from $60/month on approved credit. We'll walk you through it at your water test.
Book My Free Water Test
San Diego Water Alert
Your San Diego tap water is rated very hard. Here's what's in it.
San Diego County water tests at 15 to 29 grains per gallon, among the hardest in California. That's the white scale on your faucets, the spots on your dishes and the dry skin after every shower. And hardness is only part of the story.
San Diego hardness
300 to 500ppm
15 to 29 grains per gallon
San Diego
Hardness scale in ppm (mg/L as calcium carbonate), USGS.
33
Contaminants detected in the City of San Diego water supply
14
Above EWG health guidelines
29gpg
Peak hardness, rated very hard
What's coming out of your tap
City of San Diego, PWS CA3710020Hardness minerals
Calcium and magnesium leave scale on fixtures, clog water heaters, and dry out skin and hair.
Fixed by: whole home softener
Chlorine
Used to disinfect city water. Causes the pool smell and taste, and dries out skin and hair in the shower.
Fixed by: whole home carbon filtration
Bromate
A byproduct formed when source water is treated with ozone. Flagged by EWG above its health guideline.
Reduced by: reverse osmosis
Chromium-6
Hexavalent chromium, the contaminant made famous by the Erin Brockovich case. Detected above EWG's guideline.
Reduced by: reverse osmosis
Trihalomethanes (TTHMs)
Disinfection byproducts that form when chlorine reacts with organic matter in the water supply.
Reduced by: carbon filtration
Haloacetic acids (HAA5)
Another family of chlorination byproducts flagged in San Diego's water by EWG.
Reduced by: carbon filtration and RO
Every home's water is different.
Find out exactly what's in yours with a free in-home water test. No cost, no obligation.
Test My Water Free
Sources: EWG Tap Water Database, City of San Diego (PWS CA3710020); Metropolitan Water District hardness data; USGS hardness scale. EWG health guidelines are stricter than federal legal limits, and the city's water meets legal standards. Results in your home may vary, which is why we test your water first.
What's included
The complete whole home water system, installed. Nothing extra to buy.
One flat price covers the equipment, the install and clean water everywhere it matters in your San Diego home.
Included
Whole Home Water Softener
Removes the calcium and magnesium behind scale, spotty dishes and dry skin, at every tap in the house.
- WQA Gold Seal award-winning Resin Tech CG10 resin
- Patented ceramic valve with self-cleaning cycle
- NSF certified polishing gravel
- 100% soft water guarantee
Included
Whole Home Chlorine Filtration
A carbon stage that strips chlorine and its byproducts before water reaches your showers, sinks and appliances.
- No more pool smell or chemical taste
- Softer skin and hair after every shower
- Reduces chlorination byproducts like TTHMs
- Built to last 8 to 10 years
Included
8-Stage Reverse Osmosis
Bottled-quality drinking water from its own faucet at your kitchen sink. This is what reduces bromate and chromium-6.
- 8 stages of advanced filtration
- Reduces 1,000+ impurities for crisp, clean taste
- Dedicated drinking water faucet
- Stop buying bottled water
Included
Professional Installation
Local, veteran-owned techs install and set up everything, usually in a single visit. No surprise labor charges.
- Free in-home water test first
- System sized to your home and water
- Programmed and tested before we leave
- Lifetime limited warranty on your whole home system
American made, NSF certified
Everything above, installed
$5,665
$3,399
40% OFF
or from $60/month with financing
40% off ends Oct 31, 22 days left. Lock it in with a free water test.
Claim My 40% Off
Free water test, no obligation
Prefer no salt? Ask about our salt-free water conditioner, a zero-maintenance option for scale prevention.
Our systems
Water Treatment Systems for Southern California Homes
Five ways to fix your water, from a complete whole home system to drinking water only. Pick one to start, and we'll confirm the right fit at your free in-home water test.
Best value
Whole-House Water Softeners + Filtration
Clack USA-made valve, built with catalytic carbon
Dealer $7,000+
Starts at$1,995
You save $5,000+
What's included with the whole-house water softener and filtration
- Clack control valve, made in the USA
- Built with catalytic carbon filtration
- Removes calcium and magnesium, the cause of hard water scale
- Extends water heater and dishwasher life
- Softer skin, brighter laundry, spot-free dishes
Reverse Osmosis Drinking Water
8-stage tankless system with alkaline remineralization
Dealer $799
Starts at$350
You save $449
What's included with reverse osmosis drinking water
- 8-stage tankless reverse osmosis, no bulky tank
- Reduces TDS, chlorine, fluoride, nitrates and lead
- Alkaline stage for pH-balanced water, faucet included
- Filters changed every 12 to 18 months
- Replaces bottled water and delivery
Whole-House Filtration
Clack WS1 backwash, catalytic carbon
Dealer $4,999
Starts at$1,895
You save $3,104
What's included with whole-house filtration
- Clack WS1 backwash control valve
- Catalytic carbon filtration
- Removes chlorine, chloramine and odors house-wide
- Backwashes itself, no cartridges to change
- Cleaner water from every faucet
Salt-Free Conditioning System
Clack tank with Scale Stop media
Dealer $5,999
Starts at$1,995
You save $4,004
What's included with the salt-free conditioning system
- Clack tank with Scale Stop salt-free media
- Treats scale buildup without salt
- No electricity, no drain required
- Zero maintenance, no salt refills
- Protects pipes, water heaters and appliances
$2,799 installed this week
Pentair Whole House Salt-Free Filtration
3-stage sediment, catalytic carbon and scale inhibitor
Dealer $5,499
Starts at$2,499
You save $3,000
What's included with the Pentair salt-free filtration system
- 3-stage whole house filtration by Pentair
- Reduces chlorine, chloramine, sediment and odors
- Scale inhibitor helps reduce hard water scale
- 10 to 15 GPM whole-home flow
- No salt, no electricity, no drain line
Not sure which one fits? Book a free in-home water test and we'll show you your results before recommending anything. Compare all products
Softening and soap savings
How Much Is Hard Water Costing You?
Scale on your water heater and appliances, extra soap and bottled water all add up. Slide to match your home and see what you lose each year, and how fast a Pure Coast system pays it back.
Your Home's Hard Water Spending
Slide each one to match what your home spends.
Cases, delivery jugs and refill stations. The included RO faucet replaces them.
Lost heater efficiency, shorter appliance life, clogged fixtures and repair calls.
Soft water cuts detergent and soap use by about half.
What Hard Water Costs You
$1,160
wasted per year on untreated water
- Bottled water$720
- Appliance loss$200
- Extra soap / cleaning$240
- Payback (on $3,399 system)~3.4 yrs
What a Southern California Home Spends vs. Saves, Year by Year
Built from your sliders above. The blue line is everything you spend: the $3,399 system plus salt and RO filters every year. The green bars are what you stop wasting. Once the bars pass the line, the system has paid for itself.
Saved by year 20
$14,000Spent, incl. upkeep
$6,399Money in your pocket
$7,601Pays for itself
Year 6Tap any year on the chart to see its numbers. Upkeep uses about $70 a year in softener salt and about $80 a year in RO filters.
The Research Behind These Numbers
Independent studies, not sales math
Lower Water Heater Bills
Battelle: tank water heaters lose about 4% efficiency for every 5 grains of hardness. Soft water also lets you wash in cold water.
Longer-Lasting Appliances
In Battelle tests, tankless heaters failed from scale in 1.6 years on 26 gpg water. Dishwashers and washers last longer without it.
Clear Faucets and Showerheads
Battelle: showerheads on hard water lost 75% of their flow in under 18 months of use.
Fewer Plumbing Repairs
Less scale inside pipes, valves and toilet parts means fewer repair calls and descaling jobs.
Half the Soap and Detergent
WQRF study: soft water cut laundry and dishwasher detergent by 50% or more in very hard water.
No More Bottled Water
Americans drink 47.3 gallons of bottled water per person each year. The included 8-stage RO faucet replaces it.
How we estimate this: starting values reflect a home that buys bottled water each month, before price increases. Payback divides the $3,399 system by your yearly cost minus about $150 a year in salt and RO filters, so it matches the chart. Appliance loss uses Battelle research for the Water Quality Research Foundation. Soap uses WQRF's 50% detergent reduction. Bottled water is replaced by the included reverse osmosis faucet. The chart's cost line adds about $70 a year in softener salt and $80 a year in RO filters to the $3,399 Mixed Bed Water Softener with Catalytic Carbon + 8 Stage Reverse Osmosis. Your results depend on your home, water use and local rates. Sources: Battelle Memorial Institute for WQRF (2009 to 2010); Scientific Services S/D for WQRF (2011); Beverage Marketing Corporation (2024).
How it works
Clean water in three simple steps
No pressure, no guesswork. We test your water first, then install the right system for your San Diego home.
-
Step 1: Free water test
We come to your home, test your actual water, and show you exactly what's in it. No cost, no obligation.
We call within 24 hours -
Step 2: Custom install
A local technician fits the right whole home system for your water and budget, and locks in your sale price.
Usually one visit -
Step 3: Enjoy clean water
Softer skin and hair, purer drinking water, spotless dishes, and appliances that last, from every tap in your home.
From day one
Start With a Free Water Test
Takes 60 seconds. No obligation.
Why homeowners choose us
Local, veteran owned, and backed for life
Water touches every part of your day. It should be the last thing you have to worry about, at every budget.
That's why I founded Pure Coast Water Company: to cut through the noise and make genuinely safe water accessible to San Diego families and businesses. We run every install with the same discipline I learned in the Marine Corps.
Veteran Owned
Founded by a U.S. Marine Corps veteran. Local, accountable and on time.
Lifetime Limited Warranty
Your whole home system is backed by a lifetime limited warranty. Clean water, guaranteed.
NSF Certified
Independently tested, NSF certified materials and award-winning softening resin.
Financing Available
Low monthly payments from $60/month, so clean water fits your budget.
On approved credit.
- American-made systems
- Fully insured
- Local techs, San Diego to Riverside
- Open 7 days, 8am to 6pm
Local service
Serving Every Southern California City From San Diego to Riverside
Pure Coast tests, installs and services water softeners, whole home filtration and reverse osmosis across San Diego County, southwest Riverside County and coastal Orange County. Find your city to see what is in your local tap water.
Tap a pin to see your local water page
Find Your City on the Map
Pick a region to zoom in. Every pin has its own local water page.
San Diego City Neighborhoods
Coastal and central San Diego, all on City of San Diego water rated very hard, from the beach towns to the urban core.
Cities we serve
San DiegoLa JollaPacific BeachPoint LomaMission ValleyNorth ParkGaslamp QuarterHillcrestClairemontKearny MesaRancho Bernardo
South Bay and Coronado
Island homes, bayfront neighborhoods and the border communities, served by Cal Am, Sweetwater, Otay and City of San Diego water.
Cities we serve
North County Coast and Inland
From the Del Mar bluffs to the Escondido hills, where hard imported water builds scale in heaters, faucets and showers.
Cities we serve
Riverside County and the Desert
Wine country, the Inland Empire and the Coachella Valley, where groundwater and imported water both run hard.
Cities we serve
Orange County and Los Angeles
Coastal Orange County and the City of Los Angeles, each with its own local water report and service page.
Cities we serve
Don't See Your City Listed?
We cover far more of Southern California than we have pages for. If you live between the border and the Inland Empire, book a free water test and we will confirm your appointment, or call 619 853 6087.
Counties we serve
San Diego CountyRiverside CountyOrange County
Real reviews
5-star rated on Google
See all reviews
What your San Diego neighbors are saying
Verified reviews from homeowners who made the switch to cleaner, softer water.
Recent installs
Real Water Systems Installed in Real Southern California Homes
Watch recent Pure Coast water softener and filtration installs from San Clemente to Pacific Beach. Tap any video to play.
FAQs
Water softener and filtration questions, answered
Everything San Diego homeowners ask before switching to cleaner, softer water.
Still have a question?
Talk to a real person on our local team. We're happy to walk through anything.
(619) 853-6087Open 7 days, 8am to 6pmIs the in-home water test really free?
Yes. We come to your home, test your actual water, and show you exactly what's in it. There's no cost and no obligation to buy anything.
What's the difference between a water softener and a filter?
A softener removes the hard minerals (calcium and magnesium) that cause scale, spotty dishes and dry skin. A filter removes contaminants like chlorine and chemical byproducts for better taste and safety. Most San Diego homes benefit from both, which is why our system combines them.
How hard is San Diego's water?
San Diego water is classified as very hard, typically 15 to 29 grains per gallon (300 to 500 ppm). That's among the hardest water in California and the reason for heavy scale buildup on fixtures and appliances.
What contaminants does the system remove?
The whole home softener removes hardness minerals, and the carbon filtration stage reduces chlorine and chlorination byproducts like TTHMs. The 8-stage reverse osmosis system at your kitchen sink reduces a much wider range, including lead, heavy metals, bromate and chromium-6.
Your free water test shows exactly what's in your water, so we can recommend the right setup.
How does reverse osmosis work?
Reverse osmosis pushes water through a very fine membrane that blocks dissolved impurities like heavy metals and chemical byproducts. The result is crisp, purified drinking water from its own faucet at your sink.
Will the system lower my water pressure?
No. Our systems are sized to your home and designed to maintain your water pressure, so you won't notice a significant drop at the shower or tap.
How often do filters need to be replaced?
Whole home systems are built to last 8 to 10 years. Reverse osmosis drinking water filters are typically replaced every 12 to 18 months.
Is installation really included?
Yes. Professional installation by our local techs is included in your installed price, usually in a single visit. We'll confirm everything for your home at the water test.
Do you offer financing?
Yes. Low monthly payments start at $60/month on approved credit. We'll walk you through the options at your free water test.
What areas do you serve?
Book My Free Water Test
Takes 60 seconds. No obligation.
40% off ends in
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00Hrs
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Ready for clean, soft water in every tap?
$5,665
$3,399
installed, or from $60/month
Book your free in-home water test and lock in 40% off before Oct 31. Book your free in-home water test and ask about this month's pricing and financing.
- Free water test, no obligation
- Installation included
- Lifetime limited warranty