Derby, Kansas: Is the Tap Water Safe to Drink?
2026 EPA water quality data for 1 community water system serving 25,413+ residents. See violations, PFAS results, lead test results, and safety grades — free.
Is Derby Tap Water Safe to Drink?
Based on the latest EPA data, Derby 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.
Derby Water Quality Overview
Derby, Kansas is served by 1 community water system providing water to approximately 25,413 residents. The system draws from surface water purchased sources. Derby water systems have no recorded health-based violations. Including monitoring and reporting violations, there are 24 total violations on record.
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All 1 water system in Derby
Looking for water quality data across the whole state? See our full Kansas tap water safety report covering Kansas’s EPA-regulated water systems.
Derby Drinking Water: Frequently Asked Questions
Is Derby, Kansas tap water safe to drink?
Based on the latest EPA data, Derby 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 Derby, Kansas?
1 community water system serves Derby, Kansas, providing water to approximately 25,413 people. Different neighborhoods may be served by different utilities. Enter your ZIP code at the top to find your specific provider.
Does Derby 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 Derby drinking water?
EPA violation records for Derby 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 Derby?
Enter your Derby 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).