Water Quality in Herndon, VA (20124)
EPA violation data for public water systems serving ZIP code 20124.
No Health-Based Violations
None of the 13 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are6 monitoring/reporting violations (missed testing deadlines), all resolved.
Better than 57% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
14,375
Population
13
Water Systems
6
Violations (5yr)
0
Health-Based
Location
Loading map...
Water Systems Serving This Area (13)
Fairfax County Water Authority
Fcwa - Lorton Wtp Old, New, & River Sta
Dulles Airport
All resolvedTwin Lakes Golf-Fairfax Pk Aut
Clifton Cafe
Peterson'S Ice Cream Depot
All resolvedNew Market Sunoco
Clifton General Store
Trummer'S On Main
Clifton Presby. Church Preschool
All resolvedCountry School House
Clifton Town Meeting Hall
All resolvedClifton House
Contaminants Found
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Missed testing deadlines — not a detection of bacteria.
Used to disinfect water — generally safe at regulated levels.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2024
How Does This Compare?
Herndon (20124) has more violations than 57% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 6, most of which are monitoring/reporting issues.
Water Filter Recommendations
No contaminant issues detected. For general protection, a basic carbon filter removes common impurities like chlorine and sediment. Look for NSF/ANSI 42 certified products.