Centennial, Colorado: Is the Tap Water Safe to Drink?
2026 EPA water quality data for 12 community water systems serving 106,753+ residents. See violations, PFAS results, lead test results, and safety grades — free.
EPA data last updated: 2026-06-23
Is Centennial Tap Water Safe to Drink?
Centennial currently has 3 active health-based violations across 3 of its 12 water systems. Active violations mean affected systems may not meet federal safety standards. Check individual system reports below for details.
Centennial Water Quality Overview
Centennial, Colorado is served by 12 community water systems providing water to approximately 106,753 residents. These systems draw from surface water purchased (6), groundwater (6) sources. 3 active health-based violations across Centennial water systems require attention. Including monitoring and reporting violations, there are 257 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 12 water systems in Centennial
Looking for water quality data across the whole state? See our full Colorado tap water safety report covering Colorado’s EPA-regulated water systems.
Centennial Drinking Water: Frequently Asked Questions
Is Centennial, Colorado tap water safe to drink?
Centennial currently has 3 active health-based violations across 3 of its 12 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 Centennial, Colorado?
12 community water systems serve Centennial, Colorado, providing water to approximately 106,753 people. Different neighborhoods may be served by different utilities. Enter your ZIP code at the top to find your specific provider.
Does Centennial 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 Centennial drinking water?
EPA violation records for Centennial 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 Centennial?
Enter your Centennial 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).