Water Quality in Herndon, VA (22066)
EPA violation data for public water systems serving ZIP code 22066.
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 88% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
17,185
Population
24
Water Systems
40
Violations (5yr)
1
Health-Based
Location
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Water Systems Serving This Area (24)
Fairfax County Water Authority
Fcwa - Lorton Wtp Old, New, & River Sta
Loudoun Water - Central System
All resolvedDulles Airport
All resolvedLeesburg, Town Of
Riverbend Golf & Country Club
All resolvedL`Auberge Chez Francois
All resolvedRiverbend Golf - Back Nine
Papa Johns Pizza
1 health-basedGreat Falls Horse Center
Great Falls United Meth Presch
St Francis Episcopal Church
All resolvedGreat Falls Vol Fire Dept
Eastern Ridge School, The
All resolvedRiverbend Park Nature Center
All resolvedGreat Falls Auto Service
Great Falls Shell Service
Riverbend Park
Gt Falls Ch Of Christ Presch
Great Falls Exxon
Colvin Run Store
Great Falls Swim Tennis Club
St Francis Episcopal Church
Old Mill Assoc C/O R Fitzgeral
Contaminants Found
Missed testing deadlines — not a detection of bacteria.
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
At high levels, nitrate can cause blue baby syndrome in infants.
Used to disinfect water — generally safe at regulated levels.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2025
How Does This Compare?
Herndon (22066) has more violations than 88% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 40.
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.