Hard water, sediment, and contaminants silently damage your appliances, dry out your skin, and degrade your water quality. Izzy Plumbing installs and services whole-home filtration systems, water softeners, and reverse osmosis units across SLO County — backed by a free water test and our 12-month workmanship guarantee.
What We Offer
From hard water solutions and whole-home filtration to reverse osmosis drinking water systems — Izzy Plumbing covers every aspect of water quality for SLO County homes and businesses.
San Luis Obispo County has notoriously hard water with high calcium and magnesium levels. Our hard water treatment prevents scale buildup in pipes, water heaters, and appliances — extending their lifespan and saving you money.
We supply and install industry-leading salt-based and salt-free water softeners sized for your household. Properly softened water means better-lathering soap, softer laundry, and no more chalky white deposits on your fixtures.
Installed at the main water entry point, whole-home carbon and sediment filtration systems remove chlorine, chloramines, VOCs, sediment, and heavy metals from every faucet, shower, and appliance in your home.
Under-sink reverse osmosis systems deliver bottled-water-quality drinking water straight from your kitchen tap. RO removes up to 99% of dissolved solids, nitrates, arsenic, fluoride, and more.
Not sure which system is right for your home? Schedule a free water test — we'll analyze your water and recommend the best solution.
Book a Free Water TestWhy It Matters
Water treatment isn't just about taste — it protects your health, your appliances, and your home's plumbing from the hidden damage caused by SLO County's hard, mineral-heavy water supply.
Hard water minerals strip natural oils from skin and hair, leaving them dry, brittle, and irritated. Softened, filtered water means noticeably softer skin, shinier hair, and reduced eczema flare-ups — especially for children.
Feel the difference after the first shower.
Reverse osmosis and whole-home filtration remove chlorine, heavy metals, nitrates, pesticide runoff, and other contaminants that city treatment can't fully eliminate. Give your family truly clean water from every tap.
Up to 99% contaminant removal with RO.
Mineral scale is the #1 silent killer of water heaters, dishwashers, washing machines, and coffee makers. Treating your water prevents scale accumulation, protecting thousands of dollars of appliances and cutting energy bills.
Scale adds 25–40% to water heater energy use.
Hard water dulls fabric colors, leaves a chalky residue on glassware, and requires more detergent to achieve the same clean. Softened water uses up to 50% less soap and leaves dishes spotless and fabrics vibrant.
Use up to 50% less detergent.
Scale buildup forces water heaters to work harder — a 1/4" of scale can increase energy consumption by up to 40%. Eliminating scale with a water softener or treatment system directly reduces your monthly gas and electric bills.
Typical savings: $30–$100/month.
Stop buying single-use plastic water bottles. A home RO system delivers thousands of gallons of clean drinking water for a fraction of the cost while eliminating plastic waste — better for your wallet and the planet.
Replace 2,000+ plastic bottles per year.
Our Systems
We supply, install, and service all major water treatment systems — sized and configured for your specific water quality and household needs after a free diagnostic water test.
Best for severe hard water
Ion-exchange water softeners are the gold standard for eliminating hard water throughout your entire home. Salt granules exchange calcium and magnesium ions, producing genuinely softened water.
Best for: Homes with 10+ grains per gallon hardness
No salt, no wastewater
Template-assisted crystallization (TAC) conditioners transform minerals into harmless crystals that won't stick to pipes or surfaces. No salt, no regeneration cycle, no wastewater discharge.
Best for: Eco-conscious homeowners & HOAs with restrictions
Clean water at every faucet
A whole-home carbon block filter installed at the main entry removes chlorine, chloramines, herbicides, pesticides, and VOCs from every tap, shower, and appliance in your home.
Best for: City water users concerned about chlorine & taste
Protect all downstream equipment
Removes sand, silt, rust, and debris before water reaches your softener, RO system, or appliances. Essential for well water and older city mains. Extends the life of all downstream equipment.
Best for: Well water homes & older city water connections
Purest drinking water possible
5-stage reverse osmosis systems remove up to 99% of dissolved solids including fluoride, arsenic, nitrates, lead, and pharmaceutical residue. Dedicated faucet delivers crisp, clean drinking water on demand.
Best for: Premium drinking water for the whole family
Complete water treatment solution
Our most popular package combines a properly sized water softener with a whole-home carbon filter to deliver soft, filtered water to every tap. Best value for comprehensive protection.
Best for: Homeowners wanting complete water treatment
Not sure which system fits your home? Our free water test takes the guesswork out of it.
Call for a Free Water TestSLO County tap water contains minerals and treatment chemicals that your water report won't fully disclose. Our on-site water test reveals the real picture — and we'll tell you exactly which system (if any) you need to fix it.
Schedule your free water test at a time that's convenient for you — same-week appointments available across SLO County.
Our licensed plumber tests your water for hardness, pH, chlorine/chloramine levels, TDS (total dissolved solids), and visible sediment.
We provide a clear written summary of your water quality and a recommendation for the right system — no upselling, just honest advice.
If you choose to move forward, we install your system cleanly and efficiently — typically in one visit, with full cleanup before we leave.
Real Customers, Real Results
Trusted by hundreds of San Luis Obispo County homeowners for water treatment installations and service.
"Our water was so hard we had to scrub scale off the shower weekly. Izzy Plumbing did a free water test, recommended the right softener, and installed everything in one day. No more scale, my skin feels amazing, and our water heater is finally running quietly again. Couldn't be happier."
Linda M.
San Luis Obispo · Whole-Home Softener + Carbon Filter
"We were spending over $80/month on bottled water because our tap water tasted off. Izzy installed an RO system under the kitchen sink and the water is genuinely better than anything we've bought in a bottle. The tech explained everything clearly and cleaned up perfectly. Best plumbing decision we've made."
Tom & Karen R.
Arroyo Grande · Under-Sink Reverse Osmosis
"We're on well water and our HOA doesn't allow salt discharge. Izzy knew exactly what to recommend — a salt-free conditioner. The scale deposits on our faucets have almost completely stopped and our dishwasher runs so much better. Professional, fast, and very knowledgeable."
Maria S.
Paso Robles · Salt-Free Water Conditioner
"After moving from the Bay Area our water smelled like a swimming pool. Izzy's team tested it, confirmed high chloramine levels, and installed a big-blue whole-home filter the next day. The difference is night and day — no smell, no taste, and the kids are drinking from the tap again."
James H.
Atascadero · Whole-Home Carbon Filtration
"From the free water test to the final install, Izzy Plumbing made the whole process seamless. They explained every option without being pushy, helped us choose a bundle that fit our budget, and had it all running the same week. Our water heater uses noticeably less gas now too."
Deborah L.
Morro Bay · Softener + RO Bundle
"I've had plumbers out for water treatment before and they always tried to upsell me on a $5,000 system. Izzy came out, did a thorough free water test, and recommended a straightforward softener that solved our problem for a fair price. Honest, professional, and they stand behind their work."
Robert C.
Pismo Beach · Water Softener Installation
Licensed & Insured
CSLB #1052147
12-Month Guarantee
On all installations
4.9-Star Rated
500+ Google reviews
Same-Day Available
7 days a week
Locally Owned
Serving SLO County
Expert Technicians
Water treatment specialists
Have Questions?
Everything you need to know about water treatment, softeners, and filtration systems in San Luis Obispo County.
Still have questions? Call us — our water treatment specialists are happy to help.
(805) 264-3058Start with a free water test — we'll diagnose exactly what's in your water and recommend the right treatment system, sized and priced for your home. No pressure, no guesswork.
Related Services
Serving San Luis Obispo · Arroyo Grande · Paso Robles · Atascadero · Santa Maria · Pismo Beach · Morro Bay · Grover Beach · Nipomo · Cambria · Los Osos · Templeton