Water Treatment & Softeners in Fresno, CA

Compare 25 water treatment & softeners contractors near you in Fresno and surrounding area with an average rating of 4.4/5. Get free quotes, read reviews, and find the right pro for your project.

Last updated March 23, 2026

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Other Businesses in This Area

New Waters

Wellness Water Filtration Systems

5½+ years online
wellnesswaterfiltrationsystems.com/fresno-ca

Whole House Water Filtration System

9+ years online
wholehousewaterfiltrationsystem.com/locations/california/fresno

Yardney Water Filtration Systems

27½+ years online
yardneyfilters.com

559 Water Filters

5.03½+ years online
559waterfilters.com

Total Filtration Services

5.023+ years online
totalfiltrationservices.com

Valley Water

5.0
valleywatercorporation.com

1st Fresno Plumbing

4.9

Pure & Fresh Drinking Water

4.8

Aqua Golden Line, Inc.

4.714+ years online
aquagolden.com

EcoWater of Central California

4.7~15 years online
ecowatercc.com

First Pure Water, Alkaline water

4.7

Fresno Ag Hardware

4.723+ years online
fresnoag.com

Aroni Water Conditioning

4.4~6 years online
aroniwc.com

AvidWater, LLC

4.3~8 years online
avidwater.com

Be Alkaline Water LLC

4.3

LifeWaterSolutions

2.3

Millennium Water Systems

1.0

Water Treatment & Softeners in Nearby CA Cities

About Water Treatment & Softeners in Fresno

Water treatment covers filtration, softening, and purification systems for homes and businesses. Common solutions include whole-home water softeners, reverse osmosis drinking water systems, and iron/sulfur filters. The right system depends on your water source and specific contaminants.

Typical costs: Under-sink reverse osmosis systems run $300–$800 installed. Whole-home water softeners are $1,500–$4,000. Iron filters and multi-stage whole-home systems are $2,000–$6,000+.

Common projects include:
  • Whole-home water softener installation
  • Reverse osmosis drinking water system
  • Iron and sulfur filtration
  • UV water purification
  • Well water treatment systems

Water treatment installations that modify plumbing may require plumbing permits. Well water systems may need additional environmental or health department approval.

Frequently Asked Questions

How much does water treatment & softeners cost in Fresno?
An under-sink reverse osmosis system runs $300–$800 installed. A standard water softener is $1,500–$4,000 including installation and plumbing connections. Well water treatment systems with multiple stages (sediment, iron, softener, UV) can run $3,000–$8,000. Annual maintenance (filters, salt) is $100–$300.
How do I find a reliable water treatment & softeners contractor in Fresno?
Start with a water test — a good installer will test your water before recommending a system. Ask about ongoing maintenance costs (filter replacements, salt, UV bulb changes). The cheapest system isn't the best deal if filters cost $200 every 6 months.
Do I need a permit for water treatment & softeners in Fresno?
Simple point-of-use filters don't need permits. Whole-home systems that tie into the main water line may require a plumbing permit. Well water treatment systems may need health department review in some areas.

About NeedInstall

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