Commercial Water Treatment in San Jose, CA
San Jose's data centers, labs, fabs, hospitals and office campuses run cooling towers and purified water systems that can't go down. Its water can change from soft to very hard depending on the source. Hydrovida helps San Jose facilities cut water and energy costs, protect critical equipment and take advantage of Valley Water's efficiency rebates.
What you get
- An on-site look at your towers, boilers and water systems
- A written report with what we found
- Savings estimates you can take to your team
Get your free water analysis
No cost, no obligation. We’ll follow up to set up your on-site water analysis.
What's in San Jose's water
Most of San Jose is served by San Jose Water, which blends local groundwater, treated imported surface water from Valley Water, and local mountain surface water. Which source you get depends on your address and the season.
Those sources are very different. San Jose Water's 2025 water quality report lists average hardness of 288 mg/L, or about 17 grains per gallon, for groundwater, with a range of 175 to 451 mg/L. Treated Valley Water surface water averaged 99 mg/L and local mountain water averaged 151 mg/L. A tower can go from soft to very hard water in a matter of days, which can mean scale on one end and corrosion on the other if the program can't keep up.
Who we work with in San Jose
San Jose's facilities include data centers, semiconductor and electronics manufacturing, labs, hospitals and medical centers, universities, and large office and R&D campuses. Data centers and campuses run large cooling towers and chilled water loops. Fabs and labs depend on RO and high-purity water. Hospitals need documented Legionella control. We already work with facilities across California.
How Hydrovida fixes it
For cooling towers, we test your water, set inhibitor and cycles for San Jose's changing supply, and install controllers with remote monitoring so conductivity and feed adjust when the source changes. For data centers and critical cooling, that means fewer surprises and documented performance. For closed loops, we stop the corrosion and sludge that foul coils and wear out pumps.
For labs and fabs, we keep RO and pretreatment in spec, and our lab can autopsy a failed membrane to find the cause. For hospitals and any building with a cooling tower, we write and maintain ASHRAE 188 water management plans and run routine Legionella testing. Our chemistry is made by Hydrovida, with NSF/ANSI/CAN 60 certified chemistry options available.
Rebates and discharge rules
Valley Water's Water Efficient Technologies (WET) rebate program for commercial, industrial and institutional sites lists cooling tower efficiency upgrades among eligible projects. Projects must show measurable savings and be approved before you buy equipment. We help you measure your baseline and document the savings.
San José Environmental Services runs the pretreatment program for the San José-Santa Clara Regional Wastewater Facility and issues industrial wastewater discharge permits, with regular inspections and self-monitoring reports. We help you keep blowdown and process discharge within your limits.
What you can expect
Across 120+ facilities, Hydrovida customers average a 30% reduction in water use and $36K a year in savings. Eight in 10 facilities we analyze find savings, and we've never lost a customer because of performance. Start with a free water analysis.
What we do in San Jose
Cooling Towers & HVAC
Run more cycles, buy less water.
Closed Loop Systems
Stop rusty water and failing pumps.
RO & Water Purification
Keep membranes running longer.
Membrane Autopsy
Find out exactly why membranes fail.
Legionella Risk Management
ASHRAE 188 water management plans and testing.
Controllers & Remote Monitoring
Catch problems the day they start.
- 120+
- Facilities served
- $36K
- Average yearly savings per customer
- 30%
- Average water reduction
- 0
- Customers lost to performance
Averages across Hydrovida customers.
Questions
How hard is San Jose's water?
It depends on the source. San Jose Water's 2025 report lists groundwater averaging 288 mg/L, treated Valley Water surface water averaging 99 mg/L and local mountain water averaging 151 mg/L.
Are there rebates for cooling tower upgrades in San Jose?
Valley Water's WET rebate program lists cooling tower efficiency upgrades for commercial and industrial sites. Projects need approval before you buy, and we help document the savings.
Do you support data centers and labs?
Yes. We treat cooling towers and closed loops for critical cooling and keep RO and purified water systems in spec.
What does a free water analysis include?
We test your makeup and system water, review your current treatment, cycles and water bills, and show where you can save water and energy. There is no cost and no obligation.