Commercial Water Treatment in Pasadena, CA
Pasadena's hospitals, research campuses and office towers depend on cooling towers, boilers and purified water that can't go down. Pasadena's water is very hard, and inland summer heat pushes towers to their limit. Hydrovida keeps that equipment clean and efficient, keeps Legionella records ready, and helps you take advantage of local 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 Pasadena's water
Pasadena Water and Power (PWP) serves Pasadena and parts of Altadena, East Pasadena and San Gabriel. According to PWP's 2025 water quality report, about half of its supply came from local groundwater in the Raymond Basin and the rest was imported through the Metropolitan Water District from the Colorado River and Northern California.
PWP reports that its water is very hard: 202 to 256 mg/L in 2025, an average of about 222 mg/L, or 13 grains per gallon. That's hard enough to scale tower fill, chiller tubes, humidifiers and boiler surfaces quickly, and to keep softeners and RO systems working hard. Because the blend of groundwater and imported water changes, your treatment should be checked against the water you're actually getting.
Who we work with in Pasadena
Pasadena is home to major hospitals and medical centers, colleges and world-known science and engineering research institutions, and a dense core of commercial office buildings, hotels and city facilities. Hospitals and campuses run central plants with cooling towers, boilers and closed loops. Research labs depend on RO and purified water. Office towers run comfort-cooling towers and chilled water loops that tenants notice the minute something goes wrong. We already work with facilities across Southern California.
How Hydrovida fixes it
For cooling towers, we test your water and set inhibitor, antiscalant and cycles of concentration for Pasadena's hard supply, so you buy less water without building scale, with controllers and remote monitoring between visits. For central plants, we treat towers, boilers and closed loops as one system. For labs, we keep RO in spec with the right pretreatment and antiscalant, and our lab can autopsy a failed membrane to find out why.
For hospitals, campuses 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
PWP's business HVAC rebate page lists SoCal Water$mart rebates for cooling tower conductivity controllers and pH/cooling tower controllers for non-residential customers. Rebates must be reserved before purchase and can change, so we help you confirm eligibility and current amounts before you buy.
Pasadena's sewer flows are treated by the Los Angeles County Sanitation Districts, which issue Industrial Wastewater Discharge Permits and charge surcharges to larger and high-strength dischargers. 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 Pasadena
Cooling Towers & HVAC
Run more cycles, buy less water.
Boilers & Steam
Protect tubes and cut fuel.
Closed Loop Systems
Stop rusty water and failing pumps.
RO & Water Purification
Keep membranes running longer.
Legionella Risk Management
ASHRAE 188 water management plans and testing.
Controllers & Remote Monitoring
Catch problems the day they start.
- 120+
- Facilities served
- $36K
- Average yearly savings per customer
- 30%
- Average water reduction
- 0
- Customers lost to performance
Averages across Hydrovida customers.
Questions
How hard is Pasadena's water?
PWP's 2025 water quality report shows hardness of 202 to 256 mg/L, averaging about 222 mg/L, or roughly 13 grains per gallon. We test your actual water before setting a program.
Does PWP offer rebates for cooling tower controllers?
PWP lists SoCal Water$mart rebates for cooling tower conductivity and pH/cooling tower controllers for business customers. Rebates must be reserved before purchase, so we help you check first.
Do you service hospital and campus central plants?
Yes. We treat cooling towers, boilers and closed loops, maintain ASHRAE 188 water management plans and run Legionella testing.