Building a reputation across California's Central Valley for honest assessments, quality installations, and dependable water treatment service since 2010.
A look at how we grew from a small local installer in Fresno to the Central Valley's premium custom water engineering team.
Established in Fresno, California, focusing on providing honest water analysis and custom water softener installations for residential neighborhoods.
Expanded our operations to provide commercial filtration and high-output reverse osmosis systems for Central Valley restaurants, schools, and business facilities.
Partnered directly with premium filtration equipment manufacturers and specialty chemical suppliers. This secured priority component access and lower rates for our clients.
Celebrating over 15 years of service across Fresno, Bakersfield, Stockton, Modesto, and Visalia, maintaining lifetime contracts for thousands of satisfied customers.
Why local properties trust Cal Water Systems rather than ordering generic, boxed filtration equipment online.
Many filtration retailers sell one-size-fits-all water softeners. However, local groundwater carries varied combinations of iron levels, sulfur odors, municipal chlorine, and agricultural nitrates. Setting up a system without testing leads to rapid membrane clogging, low flow rates, or untreated water bypassing the system.
Our certified specialists run multiple on-site tests to measure your exact water quality constraints before proposing a system. This guarantees your system is correctly sized and configured, protecting your investment and ensuring long-term filtration performance.
Our technicians live and work in the communities we serve. We understand local water because we test it every day.
Tackling municipal chlorine levels, taste issues, and high hardness profiles standard in urban Fresno county homes and restaurants.
Resolving private well mineral staining, heavy iron content, and oilfield/agricultural runoff filtration needs.
Providing specialized carbon media filtration for agricultural communities targeting chemical pesticides and surface runoff trace particles.
We are a fully licensed and insured water treatment contractor. Our staff undergo rigorous certification cycles.
Founder & Chief System Designer
18+ years of experience in regional water engineering. David leads design configurations for our residential and commercial layouts.
Lead Installation Engineer
Certified plumber and chemical treatment specialist. Sarah oversees our commercial installation crews from Fresno through Modesto.
Water Testing Coordinator
Manages our on-site water quality analysis and lab reports, ensuring systems match exact local contaminant profiles.
Access to quality components and reliable parts supply directly affects the longevity of your water system.
All pressure tanks, resin beds, and fittings meet NSF/ANSI sanitary safety standards.
Our commercial softeners and residential units are constructed using US-made control valves.
Direct relations with manufacturing suppliers allow us to pass on extended parts warranties.
Get a transparent, honest assessment of your home or business water quality. No pushy sales pitches—just clean facts and certified custom designs.