Chantilly, VA: 1 Violation - Home Safety 67/100
3 ZIP codes · 2 water systems · Updated
ZipCheckup grade for Chantilly: C.
A mixed picture - some signals here are worth your attention.
Chantilly, VA holds a middle-tier grade; review the underlying water system records for the reasons behind it.
How Chantilly Compares
Data: EPA SDWIS
Chantilly Water: The Quick Version
- Water systems mapped to your city have 1 violation on record since 2021.
- Average of reported 90th-percentile lead results: 0.0008 mg/L.
- Homes built before 1986: 25% - older plumbing may contain lead solder.
- Estimated remediation: $500 per household.
- Health risk index (ZipCheckup composite of CDC data): 9.75.
Water Systems Serving Chantilly
Service in Chantilly, VA can differ by address: 2 water systems are tied to the area in federal records, and the 2 largest are listed with their violation records.
- D
- B
Overview
We track home safety data for 3 ZIP codes in Chantilly, Virginia (population ~58,955), covering 2 community water systems serving approximately 1,456,421 people region-wide. The EPA snapshots used for this build directly map water systems to 2 of 3 ZIP codes.
1 of 2 ZIP codes with a reported violation count in the available EPA record (50%) have recorded EPA violations. The available record reports no health-based violations for this measured scope.
Home Safety Score
Average Home Safety Score for Chantilly: C (67/100)
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
Chantilly water systems draw from: Surface water.
Lead & Copper
- Average of reported 90th-percentile lead results: 0.0008 mg/L (EPA action level: 0.015 mg/L)
- 0 of 2 ZIP codes with known status exceed the EPA lead action level
Radon Risk
2 of 3 ZIP records with known zones are in EPA Radon Zone 1. 1 of 3 ZIP records with known zones is in EPA Radon Zone 2.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Lead and Copper Rule | Treatment Technique | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 20152 | B | 1 | 0 | Loudoun Water - Central System |
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 20151 | D | Fairfax County Water Authority | 1,121,613 |
All ZIP Codes in Chantilly
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.
CDC Health Data for Chantilly
Source: CDC PLACES (County-level estimates). County health indicators are shown for context only and are not linked to this area's water records.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Key Contaminants Detected in Chantilly
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Old Is Chantilly's Housing Stock?
Housing age data helps assess potential lead pipe and infrastructure risks. Newer housing stock generally means lower plumbing-related contamination risk.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
The median build year for Chantilly is 1994. A build year alone does not tell you what pipes or solder a home has.
Most homes in Chantilly were built after 1986; lead exposure at a tap still depends on its service line and plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
Chantilly: Remediation Cost in Perspective
Estimated remediation for Chantilly is a small fraction of median property value - one percent or less - though the ratio does not describe any single household.
Estimated remediation costs in Chantilly can be compared with local home values. The $300–$800 estimated range can be set against the median property value; actual costs vary by home. Home values are 126% above the Virginia average.
Protecting Children from Lead in Chantilly
Why children are most at risk: The CDC states that no safe blood lead level in children has been identified. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Averaged across Chantilly ZIP codes, the 90th-percentile lead results reported by water systems come to less than 10 parts per billion. That is an area summary rather than a reading from any home, and EPA's health goal for lead in drinking water is zero; about 25% of local housing predates 1986.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Historical Flood-Claim Evidence for Chantilly
Historical NFIP data for Chantilly contains 11 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $2,465. Among ZIP codes with claim records, 0% 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 $500 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.
What You Can Do in Chantilly
- Test your water at home. City-level data shows averages - your tap may differ. Check the certification, price and turnaround time of any water test kit or lab service.
- Install a certified water filter. For Lead and Copper Rule, listed in the water-quality records for Chantilly: if it is a rule or reporting requirement rather than a contaminant, ask your utility what the record involved; for bacteria, follow any boil-water notice from your utility; for a specific chemical contaminant, check whether a filter is certified to reduce it. Not every contaminant has a consumer filter certification.
- Check your home's plumbing. Homes built before 1986 may have lead solder in pipes. A licensed plumber can assess your risk.
Deep Dive Reports
Detailed analysis for Chantilly, VA