Is Los Gatos, CA Tap Water Safe to Drink?
Los Gatos tap water meets federal Safe Drinking Water Act standards but 2 of 2 ZIP codes show detections above EPA health guidelines, primarily for PFTrDA. A certified filter is recommended for households that want an additional layer of protection.
Where Does Los Gatos Get Its Water?
Water in Los Gatos, CA is provided by 2 public water systems: KOHALA RANCH WATER CO. and SAN JOSE WATER.
How Is Los Gatos Tap Water Treated?
Treated water is disinfected using calcium hypochlorite and free chlorine and ozone. Treatment includes conventional treatment (coagulation, flocculation, and filtration), groundwater disinfection and post-ozone biofiltration.
What's in Los Gatos Tap Water?
The following contaminants were detected most frequently in Los Gatos public water systems. 2 of 2 ZIP codes showed detections above EPA health guidelines.
| Contaminant | Peak detected | EPA guideline | ZIPs detected | Status |
|---|---|---|---|---|
| PFTrDA | 0.007 µg/L | 0.007 µg/L | 2 ZIPs | Above guideline |
| lithium | 9 µg/L | — | 0 ZIPs | Within guideline |
| PFBA | 0.005 µg/L | — | 0 ZIPs | Within guideline |
| 11Cl-PF3OUdS | 0.005 µg/L | — | 0 ZIPs | Within guideline |
| HFPO-DA | 0.005 µg/L | — | 0 ZIPs | Within guideline |
Health Risk Profile for Los Gatos
Based on EPA monitoring data, 2 of 2 ZIP codes in Los Gatos have recorded detections above EPA health guidelines. Sensitive populations such as infants, pregnant individuals, and those with weakened immune systems may benefit from an additional layer of protection such as a certified point-of-use filter.
Best Broad-Spectrum Filters for This Water Profile
This city profile includes PFAS detections, chlorine disinfection, and other dissolved contaminants. Reverse osmosis (RO) systems certified under NSF/ANSI 58 provide broad reduction coverage; for PFAS specifically, confirm NSF/ANSI P473 or equivalent PFAS reduction certification.
8-stage tankless RO system certified to NSF/ANSI 58, reduces 1,000+ contaminants including PFAS, lead, arsenic, fluoride, and nitrates.
See recommendations matched to your exact address: choose your ZIP code below.
Frequently Asked Questions about Los Gatos Tap Water
Is Los Gatos tap water safe to drink?
Los Gatos tap water meets Safe Drinking Water Act requirements but 2 of 2 ZIP codes show contaminant levels above EPA health-based guidelines. A certified point-of-use filter adds an extra layer of protection.
What contaminants are in Los Gatos tap water?
The most commonly detected contaminants in Los Gatos water systems include: PFTrDA, lithium, PFBA. See the ZIP-level reports for exact measurements and EPA guideline comparisons.
Where does Los Gatos get its drinking water?
Los Gatos receives water from 2 public water systems, including KOHALA RANCH WATER CO..
Do I need a water filter in Los Gatos?
If your ZIP code is among those with detections above EPA health guidelines, choose a filter certified for the specific contaminants shown in your ZIP report. Reverse osmosis is generally the broadest option for PFAS, lithium, and many other dissolved contaminants.
How often is Los Gatos tap water tested?
Public water systems in Los Gatos are required by the EPA to test for regulated contaminants on schedules ranging from daily (for microbials and disinfectants) to annual or triennial (for many chemical contaminants). Results are published in annual Consumer Confidence Reports (CCRs). The data on this page reflects the most recent available EPA monitoring results, with the latest sample date of 2025-05-05.
Tap water reports by ZIP in Los Gatos
- 95030 - Los Gatos Trailer Park, Los Gatos tap water report Higher concern
- 95032 - Cambrian Park, Los Gatos tap water report Higher concern
Water utilities serving Los Gatos, CA
Service area boundaries are approximate and based on state filings or modeled estimates. Contact your utility to confirm exact service at a specific address.
- SAN JOSE WATERAction advised
- SANTA CLARA VALLEY WATER DISTRICTNo recent federal sampling
Also covers / overlaps with
- San Jose CCD, CA · Township
- Lexington Hills CCD, CA · Township
- Monte Sereno, CA