Commercial Water Treatment in Gilroy & Morgan Hill, CA
South Santa Clara County runs on wells. Gilroy and Morgan Hill both rely entirely on local groundwater for city water, and that water is hard. For growers, food processors, cold storage, labs and schools, hard well water means scale in cooling towers, boilers, humidifiers and coolers unless the program is built for it. Hydrovida helps South County facilities cut water and energy costs and keep equipment clean.
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 South County water
The City of Gilroy's water is 100% local groundwater from the Llagas Subbasin, pumped by nine city wells. Morgan Hill also uses local groundwater as its sole source of supply, including wells in the Coyote Valley area. Valley Water manages the Llagas Subbasin.
Gilroy's 2025 water quality report lists average hardness of 237 ppm, ranging from 174 to 271 ppm, with dissolved solids around 339 ppm. That's very hard water. In a cooling tower, every cycle of concentration stacks more calcium on the fill and heat exchangers. In a boiler or humidifier, a softener that slips even briefly leaves scale behind.
Who we work with in South County
Gilroy, Morgan Hill and San Martin mix agriculture and industry: mushroom and specialty growers, seed and nursery operations, food processing, packing and cold storage, labs and light manufacturing, plus schools, colleges and city facilities. Growing rooms and coolers depend on clean, steady humidification and refrigeration. Food plants run boilers and wash systems, and buildings run cooling towers and closed loops.
How Hydrovida fixes it
We start with a water test, then size and tune softeners, set inhibitor and cycles for hard groundwater, and add controllers with remote monitoring so towers bleed on real conductivity. When towers, condensers or heat exchangers are already scaled, we clean them and keep them clean. For boilers and steam humidification, we protect tubes and cut blowdown. We write and maintain ASHRAE 188 water management plans and run routine Legionella testing for towers and condensers.
Our chemistry is made by Hydrovida, with NSF/ANSI/CAN 60 certified chemistry options available.
Valley Water rebates, and a Morgan Hill bonus
Valley Water's Water Efficient Technology (WET) rebate is open to commercial, industrial and institutional properties in Santa Clara County, and its qualifying equipment list includes cooling tower efficiency upgrades and water softeners. Rebates are based on measured savings: $4 per CCF (748 gallons) saved per year or up to 100% of equipment cost, whichever is less, with a maximum of $100,000 per project. A project has to save at least 74,800 gallons a year and be submetered before and after the change, so apply before you swap equipment. Valley Water says current funding lasts until June 30, 2027 or until it runs out, and terms can change, so we'll help you check before you buy.
Properties served by the City of Morgan Hill (and San José Municipal Water) can get an extra $4 per CCF, up to $10,000 more, when the rebate is based on water savings rather than equipment cost.
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 Gilroy & Morgan Hill
Cooling Towers & HVAC
Run more cycles, buy less water.
Water Softening & Pretreatment
Test, tune, service or replace softeners.
Boilers & Steam
Protect tubes and cut fuel.
Cooling Tower Cleaning
Remove sludge, scale and slime.
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
Where does Gilroy's water come from?
All of it is local groundwater from the Llagas Subbasin, pumped by nine city wells.
How hard is Gilroy water?
Gilroy's 2025 report lists average hardness of 237 ppm, ranging from 174 to 271 ppm.
Is there a rebate for softeners or cooling tower upgrades?
Valley Water's WET rebate lists both. It's based on measured savings, and Morgan Hill city water customers can get an extra $4 per CCF, up to $10,000.
Do you work with growers and cold storage?
Yes. We treat humidification, refrigeration condensers, boilers and cooling towers for agricultural and food sites.
What does a free water analysis include?
We test your makeup and system water, review your treatment, softeners, cycles and water bills, and show where you can save water, energy and chemicals. There is no cost and no obligation, and nothing changes until you agree.