Warrenville, Illinois: Is the Tap Water Safe to Drink?
2026 EPA water quality data for 31 community water systems serving 14,673+ residents. See violations, PFAS results, lead test results, and safety grades — free.
Is Warrenville Tap Water Safe to Drink?
Based on the latest EPA data, Warrenville tap water meets all federal drinking water standards. All 31 tested systems have received a safety grade of A or B, with no active health-based violations.
Warrenville Water Quality Overview
Warrenville, Illinois is served by 31 community water systems providing water to approximately 14,673 residents. These systems draw from groundwater sources. Warrenville water systems have no recorded health-based violations. Including monitoring and reporting violations, there are 387 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 31 water systems in Warrenville
Looking for water quality data across the whole state? See our full Illinois tap water safety report covering Illinois’s EPA-regulated water systems.
Warrenville Drinking Water: Frequently Asked Questions
Is Warrenville, Illinois tap water safe to drink?
Based on the latest EPA data, Warrenville tap water meets all federal drinking water standards. All 31 tested systems have received a safety grade of A or B, with no active health-based violations.
How many water utilities serve Warrenville, Illinois?
31 community water systems serve Warrenville, Illinois, providing water to approximately 14,673 people. Different neighborhoods may be served by different utilities. Enter your ZIP code at the top to find your specific provider.
Does Warrenville 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 Warrenville drinking water?
EPA violation records for Warrenville 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 Warrenville?
Enter your Warrenville 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).