Williamsburg, VA: 4 Violations — 91/100 (2026)
4 ZIP codes · 8 water systems · Updated 2026-06-03
Compared to statewide averages in VA, Williamsburg scores well — health violations are below the norm and systems generally operate within federal standards.
How Williamsburg Compares
Data: EPA SDWIS Last verified: 2026-06-03
Williamsburg Water: The Quick Version
- Your city's water systems recorded 4 violations in the past 5 years.
- Average lead level: 0.0019 mg/L.
- Estimated remediation: $1,600 per household.
- CDC health risk index: 12.28 — above typical levels.
Water Systems Serving Williamsburg
Structurally, Williamsburg, VA's water supply is divided. Federal data identifies 8 water systems in the area, with 3 providers serving the bulk of residential connections. These utilities operate independently, meaning rate-setting authority and EPA compliance accountability are distributed rather than centralized.
Overview
We track water quality and home safety data for 4 ZIP codes in Williamsburg, Virginia (population ~99,753), covering 8 community water systems serving approximately 486,230 people region-wide.
4 of 4 ZIP codes (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Williamsburg: A (91/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Williamsburg water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0019 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 0 ZIP codes
- Zone 3 (Low): 4 ZIP codes
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Arsenic | Inorganic | 5 | 4 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 23185 | B | 1 | 0 | Jcsa - Central System |
| 23186 | A | 1 | 0 | Jcsa - Central System |
| 23187 | A | 1 | 0 | Jcsa - Central System |
| 23188 | A | 1 | 0 | Jcsa - Central System |
All ZIP Codes in Williamsburg
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
Updated daily.
CDC Health Data for Williamsburg
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
Key Contaminants Detected in Williamsburg
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Williamsburg: Remediation Cost in Perspective
Across Williamsburg, the equity share taken up by estimated remediation is small — a favorable ratio for most property owners.
Remediation costs in Williamsburg are relatively low compared to home values. The $1,067–$2,333 estimated range is a small fraction of median property value. Home values are 32% above the Virginia average.
Protecting Children from Lead in Williamsburg
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.
Lead risk in Williamsburg appears low overall, but individual homes may differ. Testing is the only way to confirm your water's lead content.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Climate-Related Water Risk for Williamsburg
Over the multi-decade window covered by the National Flood Insurance Program, Williamsburg has accumulated 245 claims — a total that suggests more than isolated flood exposure. With 75% of ZIP codes in designated flood zones, the water-quality implications of flooding move from hypothetical to periodically relevant: treatment intake can be compromised, wells can be infiltrated, and distribution backflow can occur.
Williamsburg has a moderate flood history with 245 FEMA claims averaging $10,026 per payout. 75% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
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. Flood damage can add significantly to the estimated <strong>$1,600</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
Deep Dive Reports
Detailed analysis for Williamsburg, VA