San Juan Capistrano, California: Is the Tap Water Safe to Drink?
2026 EPA water quality data for 5 community water systems serving 492+ residents. See violations, PFAS results, lead test results, and safety grades — free.
Is San Juan Capistrano Tap Water Safe to Drink?
Based on the latest EPA data, San Juan Capistrano tap water meets all federal drinking water standards. All 5 tested systems have received a safety grade of A or B, with no active health-based violations.
San Juan Capistrano Water Quality Overview
San Juan Capistrano, California is served by 5 community water systems providing water to approximately 492 residents. These systems draw from groundwater (4), gwudi (1) sources. San Juan Capistrano water systems have no recorded health-based violations. Including monitoring and reporting violations, there are 13 total violations on record.
Find Your Water System
Search by ZIP code to find your exact water provider and see its full EPA report.
All 5 water systems in San Juan Capistrano
Looking for water quality data across the whole state? See our full California tap water safety report covering California’s EPA-regulated water systems.
San Juan Capistrano Drinking Water: Frequently Asked Questions
Is San Juan Capistrano, California tap water safe to drink?
Based on the latest EPA data, San Juan Capistrano tap water meets all federal drinking water standards. All 5 tested systems have received a safety grade of A or B, with no active health-based violations.
How many water utilities serve San Juan Capistrano, California?
5 community water systems serve San Juan Capistrano, California, providing water to approximately 492 people. Different neighborhoods may be served by different utilities. Enter your ZIP code at the top to find your specific provider.
Does San Juan Capistrano 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 San Juan Capistrano drinking water?
EPA violation records for San Juan Capistrano 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 San Juan Capistrano?
Enter your San Juan Capistrano 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).