Williamsburg County, Virginia
1 ZIP code · Avg score 95/100 · Grade A · Updated 2026-06-03
Spanning 1 ZIP code, Williamsburg County posts strong drinking water compliance — most systems have never triggered a health-based notice.
How Williamsburg County Compares
How Williamsburg County Compares
Williamsburg County scores 29 points above the Virginia state average (66/100) and 27 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
Key Risk Factors
Health risk index: 10.7 (asthma 11%, diabetes 9.4%)
Estimated additional annual cost per homeowner: $3,200, driven primarily by sea_level
Infrastructure: 0.26% avg pipe failure probability
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: $3,200
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 Williamsburg County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 5 systems in Williamsburg County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Jcsa - Central System | 57,726 | 1 |
| 2 | City of Williamsburg, | 16,300 | 1 |
| 3 | Woodhaven Shores | 1,365 | 1 |
| 4 | Wexford Hills - Jcsa | 360 | 1 |
| 5 | Ware Creek Manor - Jcsa | 161 | 1 |
All ZIP Codes in Williamsburg County
1 ZIP code tracked in Williamsburg County.
| # | ZIP Code | City | Safety Score | Grade | Violations |
|---|---|---|---|---|---|
| 1 | 23187 | Williamsburg | 95 | A | 1 |
Recommended Buyer Guides for Williamsburg County
Filtered against EPA monitoring data and CDC lead-exposure guidance, the guides below skip the generic catalog and connect directly to the contaminants and hazards on file here.
- Best Water Testing Kits — Baseline water quality check for your ZIP
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant peace of mind
Overview
Williamsburg County in Virginia covers 1 ZIP code with an average Home Safety Score of A (95/100).
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.