Herndon, Virginia: Is the Tap Water Safe to Drink?
2026 EPA water quality data for 2 community water systems serving 1,146,214+ residents. See violations, PFAS results, lead test results, and safety grades — free.
Is Herndon Tap Water Safe to Drink?
Herndon has 2 community water systems. 1 of 2 graded system meets all EPA standards (grade A or B), while 1 has recorded violations. No active health-based violations are currently open. Check individual system reports below for specifics.
Herndon Water Quality Overview
Herndon, Virginia is served by 2 community water systems providing water to approximately 1,146,214 residents. These systems draw from surface water (1), surface water purchased (1) sources. Herndon water systems have no recorded health-based violations.
Find Your Water System
Search by ZIP code to find your exact water provider and see its full EPA report.
All 2 water systems in Herndon
Looking for water quality data across the whole state? See our full Virginia tap water safety report covering Virginia’s EPA-regulated water systems.
Herndon Drinking Water: Frequently Asked Questions
Is Herndon, Virginia tap water safe to drink?
Herndon has 2 community water systems. 1 of 2 graded system meets all EPA standards (grade A or B), while 1 has recorded violations. No active health-based violations are currently open. Check individual system reports below for specifics.
How many water utilities serve Herndon, Virginia?
2 community water systems serve Herndon, Virginia, providing water to approximately 1,146,214 people. Different neighborhoods may be served by different utilities. Enter your ZIP code at the top to find your specific provider.
Does Herndon 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 Herndon drinking water?
EPA violation records for Herndon 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 Herndon?
Enter your Herndon 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).