Manassas, VA Home Safety: Home Safety 79/100
6 ZIP codes · 5 water systems · Updated
ZipCheckup grade for Manassas: B.
This ZIP looks solid, with a few items worth a quick check.
Tap water in Manassas, VA scores well - low violation counts, above-average safety grade.
How Manassas Compares
Data: EPA SDWIS
What You Should Know About Manassas Water
- Average lead level: 0.0001 mg/L.
- Homes built before 1986: 43% - older plumbing may contain lead solder.
- Estimated remediation: $1,750 per household.
- CDC health risk index: 11.43.
Who Supplies Your Water in Manassas
Water supply in Manassas, VA follows a divided structure: 3 utilities account for the largest share of residential service out of 5 total systems, each managing its own distribution network and EPA reporting. Because these systems operate independently, rate decisions and compliance outcomes are determined separately.
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Overview
We track home safety data for 6 ZIP codes in Manassas, Virginia (population ~161,383), covering 5 community water systems serving approximately 433,965 people region-wide. The EPA snapshots used for this build directly map water systems to 4 of 6 ZIP codes.
The available EPA record reports 0 violations for 4 ZIP codes with a reported violation count.
Home Safety Score
Average Home Safety Score for Manassas: B (79/100)
Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| PFAS MCL Screen | UCMR 5 testing against the covered federal MCLs |
| Radon Risk | EPA radon zone classification |
| Annual AQI | EPA AirData county-year median with at least 90 observed days |
Water Sources
Manassas water systems draw from: Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0001 mg/L (EPA action level: 0.015 mg/L)
- 0 of 4 ZIP codes with known status exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
- Zone 1 (High): 2 ZIP codes
- Zone 2 (Moderate): 4 ZIP codes
- Zone 3 (Low): 0 ZIP codes
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 20109 | B | Pwcsa - West | 136,409 |
| 20110 | B | City of Manassas, | 42,696 |
| 20111 | B | Pwcsa - West | 136,409 |
| 20112 | C | Pwcsa - East | 168,747 |
All ZIP Codes in Manassas
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.
Health Outcomes in Manassas
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Housing & Infrastructure in Manassas
With 43% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
For a city with a median build year of 1990, Manassas carries a housing profile that straddles the 1986 federal ban on lead solder in plumbing. Neither predominantly new nor predominantly old, the stock presents a moderate aggregate risk environment - with individual risk varying sharply depending on when and where a specific home was built.
Most homes in Manassas were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
Cost Context: What Remediation Means for Manassas Homeowners
In Manassas, property values comfortably outpace what documented remediation typically costs - the equity share is proportionally low.
Remediation costs in Manassas are relatively low compared to home values. The $883–$2,833 estimated range is a small fraction of median property value. Home values are 43% above the Virginia average.
Lead Exposure Risk for Children in Manassas
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Although utility-side compliance with federal Lead and Copper requirements remains the system reference, that compliance does not extend down into interior plumbing. With 43% of Manassas stock built before the solder ban and aggregate readings at or beyond the action mark, a household-level sample becomes the practical way to close that information gap.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Historical NFIP Claim Context in Manassas
Historical NFIP data for Manassas contains 226 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $12,113. Among ZIP codes with claim records, 50% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. The <strong>$1,750</strong> remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.
Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.
Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.
Deep Dive Reports
Detailed analysis for Manassas, VA