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Los Gatos, California: Is the Tap Water Safe to Drink?

2026 EPA water quality data for 22 community water systems serving 4,799+ residents. See violations, PFAS results, lead test results, and safety grades — free.

Is Los Gatos Tap Water Safe to Drink?

Los Gatos currently has 7 active health-based violations across 7 of its 22 water systems. Active violations mean affected systems may not meet federal safety standards. Check individual system reports below for details.

Los Gatos Water Quality Overview

Los Gatos, California is served by 22 community water systems providing water to approximately 4,799 residents. These systems draw from groundwater (7), surface water purchased (7), surface water (7), gwudi (1) sources. 7 active health-based violations across Los Gatos water systems require attention. Including monitoring and reporting violations, there are 237 total violations on record.

22
Water Systems
126
Health Violations
15/22
Rated A or B
💧 Filter Guide📖 Violations Explained📄 Read Your CCR

Find Your Water System

Search by ZIP code to find your exact water provider and see its full EPA report.

All 22 water systems in Los Gatos

LOMA PRIETA JUSD-LOMA PRIETA SCHOOL A
LOS GATOS, CA · 542 people · Groundwater ✓ No recent health violations
COYOTE VALLEY RV RESORT A
LOS GATOS, CA · 500 people · Groundwater ✓ No recent health violations
SUMMIT WEST MUTUAL WATER CO. F
LOS GATOS, CA · 481 people · Surface Water Purchased ⚠ 1 active health violation
VILLA DEL MONTE MWC A
LOS GATOS, CA · 419 people · Surface Water ✓ No recent health violations
LAS CUMBRES MUTUAL WATER CO A
LOS GATOS, CA · 402 people · Surface Water ✓ No recent health violations
ALDERCROFT HEIGHTS COUNTY WATER DISTRICT A
LOS GATOS, CA · 338 people · Surface Water ✓ No recent health violations
LUPIN LODGE F
LOS GATOS, CA · 300 people · Surface Water ⚠ 1 active health violation
NESTLDOWN RANCH A
LOS GATOS, CA · 265 people · Groundwater ✓ No recent health violations
MOUNTAIN SUMMIT MUTUAL WATER SYSTEM A
LOS GATOS, CA · 223 people · Surface Water Purchased ✓ No recent health violations
RIDGE MUTUAL WATER COMPANY F
LOS GATOS, CA · 213 people · Surface Water Purchased ⚠ 1 active health violation
MELODY WOODS WATER COMPANY A
LOS GATOS, CA · 168 people · Groundwater ✓ No recent health violations
LAKE CANYON MUTUAL WATER COMPANY F
LOS GATOS, CA · 156 people · Surface Water ⚠ 1 active health violation
SUMMIT MUTUAL WATER COMPANY A
LOS GATOS, CA · 152 people · Surface Water ✓ No recent health violations
RAINERI MUTUAL WATER COMPANY F
LOS GATOS, CA · 145 people · Surface Water ⚠ 1 active health violation
LAKESIDE SD-LAKESIDE SCHOOL A
LOS GATOS, CA · 127 people · Groundwater ✓ No recent health violations
VISTA GRANDE WATER USERS ASSOCIATION A
LOS GATOS, CA · 79 people · Surface Water Purchased ✓ No recent health violations
BRUSH AND OLD WELL MUTUAL WATER COMPANY F
LOS GATOS, CA · 70 people · Surface Water Purchased ⚠ 1 active health violation
LAUREL COMMUNITY LEAGUE F
LOS GATOS, CA · 64 people · GWUDI ⚠ 1 active health violation
MIREVAL IMPROVEMENT ASSOCIATION A
LOS GATOS, CA · 60 people · Surface Water Purchased ✓ No recent health violations
MOUNTAIN SPRINGS MUTUAL WATER COMPANY A
LOS GATOS, CA · 40 people · Surface Water Purchased ✓ No recent health violations
SANTA CRUZ MOUNTAIN PURE WC A
LOS GATOS, CA · 28 people · Groundwater ✓ No recent health violations
DAVID BRUCE WINERY A
LOS GATOS, CA · 27 people · Groundwater ✓ No recent health violations

Looking for water quality data across the whole state? See our full California tap water safety report covering California’s EPA-regulated water systems.

Los Gatos Drinking Water: Frequently Asked Questions

Is Los Gatos, California tap water safe to drink?

Los Gatos currently has 7 active health-based violations across 7 of its 22 water systems. Active violations mean affected systems may not meet federal safety standards. Check individual system reports below for details.

How many water utilities serve Los Gatos, California?

22 community water systems serve Los Gatos, California, providing water to approximately 4,799 people. Different neighborhoods may be served by different utilities. Enter your ZIP code at the top to find your specific provider.

Does Los Gatos tap water have lead?

Lead in drinking water typically enters from old pipes and fixtures inside homes and buildings, not from the treatment plant. The EPA requires water systems to monitor for lead under the Lead and Copper Rule. Click any water system above to see its most recent 90th-percentile lead test results. Homes built before 1986 are most likely to have lead plumbing components.

What contaminants have been found in Los Gatos drinking water?

EPA violation records for Los Gatos water systems are listed on each utility's report page. Common regulated contaminants include disinfection byproducts (TTHMs, HAA5), coliform bacteria, nitrates, and lead. Click any utility above to see its full violation history going back 10 years.

How do I find out which water company serves my address in Los Gatos?

Enter your Los Gatos ZIP code in the search box at the top of this page. ClearWater will identify the specific water system serving your area and show you its EPA violation history, lead test results, and an overall safety grade. You can also check your water bill or your utility's annual Consumer Confidence Report (CCR).