Water Quality in Herndon, VA (20121)
EPA violation data for public water systems serving ZIP code 20121.
Active Health Violations
1 health-based violation found in the past 5 years, with at least one still unresolved. Contaminant levels have exceeded federal safety limits. Consider testing your tap water independently.
More violations than 72% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
27,788
Population
12
Water Systems
13
Violations (5yr)
1
Health-Based
Location
Loading map...
Water Systems Serving This Area (12)
Fairfax County Water Authority
Fcwa - Lorton Wtp Old, New, & River Sta
Dulles Airport
All resolvedBull Run - Main System
Bull Run Special Events Center
All resolvedBull Run - Comfort Station 1
1 health-basedBull Run - Bathhouse #2
Bull Run - Comfort Station 2
Cerritos Pupuseria
All resolvedBull Run - Shooting Center
Mulford Private School
Luck Stone - Fairfax Plant
Contaminants Found
Missed testing deadlines — not a detection of bacteria.
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2024
How Does This Compare?
Herndon (20121) has more violations than 72% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 13.
Recommended Water Filters
Based on health-based violations detected in your area, these filter types are commonly used to address similar contaminants. Consult your water utility's Consumer Confidence Report for the most current data.
UV Water Purifier
Uses ultraviolet light to neutralize bacteria, viruses, and parasites without chemicals. Ideal for homes with microbial contamination concerns.
Targets:E. coli, Coliform, Giardia, Cryptosporidium
Look for:NSF/ANSI 55 (Class A) certified
Always look for filters certified by NSF International for the specific contaminants you want to remove. This is general educational information, not an endorsement of any specific product.