San Luis, Arizona: Is the Tap Water Safe to Drink?
2026 EPA water quality data for 1 community water system serving 39,705+ residents. See violations, PFAS results, lead test results, and safety grades — free.
Is San Luis Tap Water Safe to Drink?
Based on the latest EPA data, San Luis tap water meets all federal drinking water standards. All 1 tested system has received a safety grade of A or B, with no active health-based violations.
San Luis Water Quality Overview
San Luis, Arizona is served by 1 community water system providing water to approximately 39,705 residents. The system draws from groundwater sources. San Luis water systems have recorded 4 health-based violations in their history, though none are currently active. Including monitoring and reporting violations, there are 37 total violations on record.
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All 1 water system in San Luis
Looking for water quality data across the whole state? See our full Arizona tap water safety report covering Arizona’s EPA-regulated water systems.
San Luis Drinking Water: Frequently Asked Questions
Is San Luis, Arizona tap water safe to drink?
Based on the latest EPA data, San Luis tap water meets all federal drinking water standards. All 1 tested system has received a safety grade of A or B, with no active health-based violations.
How many water utilities serve San Luis, Arizona?
1 community water system serves San Luis, Arizona, providing water to approximately 39,705 people. Different neighborhoods may be served by different utilities. Enter your ZIP code at the top to find your specific provider.
Does San Luis 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 Luis drinking water?
EPA violation records for San Luis 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 Luis?
Enter your San Luis 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).