Manassas County, Virginia
1 ZIP code · Avg score 69/100 · Grade C · Updated 2026-07-19
ZipCheckup grade for Manassas: C.
A mixed picture - some signals here are worth your attention.
Water monitoring across Manassas County's 1 ZIP code paints a mid-range picture - solid compliance in some zones, documented concerns in others; most violations on record are concentrated in specific prior years rather than spread evenly across the full compliance history, and the overall county grade has held steady in the middle tier without major shifts in either direction.
How Manassas County Compares
How Manassas County Compares
Manassas County scores 3 points above the Virginia state average (66/100) and 1 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-07-19
Key Risk Factors
Health risk index: 11.4 (asthma 9.7%, diabetes 12%)
Estimated additional annual cost per homeowner: $1,930, driven primarily by sea_level
Infrastructure: 0.42% avg pipe failure probability, 100% of ZIPs at high risk
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $1,930
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Health Outcomes vs National Average
CDC PLACES data for Manassas County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Manassas County
3 community water systems serving Manassas County.
- C
- C
- C
Systems with the most violations in Manassas County
1 water system with recorded EPA violations.
- C
All ZIP Codes in Manassas County
1 ZIP code tracked in Manassas County.
| # | ZIP Code | City | Safety Score | Grade | Violations |
|---|---|---|---|---|---|
| 1 | 20108 | Manassas | 69 | C | 2 |
Recommended Buyer Guides for Manassas County
Editorial methodology pairs each documented risk in this county with the buyer category that addresses it, drawing on water-quality detections, housing-stock lead exposure, EPA Radon Zone designation, and FEMA flood and wildfire ratings. NSF-certified options surface where applicable, and products that match the specific contaminant take priority.
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
Overview
Manassas County in Virginia covers 1 ZIP code with an average Home Safety Score of C (69/100).
1 of 1 ZIP code have recorded EPA violations. All violations are monitoring/reporting type.
← Back to Virginia water quality report
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
Updated daily.