Manassas, VA 20111

2 water systems • 14,105 residents

Moderate water quality - consider filtration

C

Score: 42/100

Graded on EPA violations, contaminants, severity, compliance, and enforcement history. See methodology.

Data updated June 2026 • Sources: EPA ECHO and EPA Envirofacts

18

Contaminants Detected

168

Violations on Record

38

Health-Based Violations

0

Recent Violations

Grade Breakdown

Contaminant Count7 / 25
Violation History15 / 25
Contaminant Severity1 / 25
System Compliance0 / 15
Enforcement History0 / 10
Total Score42%

42 / 100 points

Recommended Water Filters

  • ✓Point-of-Use Carbon Filter (NSF-certified for lead)
  • ✓Reverse Osmosis or Ion Exchange Filter
  • ✓Ultraviolet (UV) Purification
  • ✓Activated Carbon Filter (disinfection byproducts)
Compare filter types in our Filter Guide →

Consult a water quality specialist for personalized recommendations.

Manassas vs VA & National Average

Detected Contaminants

18 contaminants detected across water systems serving this ZIP code

ContaminantCategory
NitrateAgricultural
Nitrate-NitriteAgricultural
Antimony, TotalHeavy Metal
ArsenicHeavy Metal
BariumHeavy Metal
Beryllium, TotalHeavy Metal
CadmiumHeavy Metal
ChromiumHeavy Metal
Lead and Copper RuleHeavy Metal
MercuryHeavy Metal
NickelHeavy Metal
SeleniumHeavy Metal
Thallium, TotalHeavy Metal
Coliform (TCR)Microorganism
E. COLIMicroorganism
Revised Total Coliform RuleMicroorganism
ChlorineOther
Consumer Confidence RuleOther

Water System Information

Systems Serving This ZIP:
ROLLING BROOK MOBILE HOME PARK, MANASSAS PARK, CITY OF
Population Served:
14,105
Systems With Violations:
2 of 2
Major Violations:
79
Enforcement Actions:
167

Nearby Areas

20110

Manassas • 2.5 mi away

C

22195

Woodbridge • 3.5 mi away

A

20136

Bristow • 5.8 mi away

D

20171

Herndon • 11.1 mi away

A

22180

Vienna • 13.7 mi away

A

22182

Vienna • 15 mi away

A

Frequently Asked Questions

What does the grade mean?

Our A–F grade ranks this ZIP code's water quality against every other analyzed ZIP in the country, based on EPA data. A = among the best, F = among the most troubled.

Is my tap water safe to drink?

Water systems regulated by the EPA must comply with Safe Drinking Water Act standards. However, if you're concerned about water quality, consider a water filter appropriate for your contaminants.

How often is the data updated?

We update our data quarterly with the latest EPA ECHO and Envirofacts data. Historical violations are tracked to identify patterns.

What filters do you recommend?

Filter recommendations are based on detected contaminants in your area. See our Filter Guide for detailed information about different filter types.