James City County, Virginia
9 ZIP codes · Avg score 78/100 · Grade B · Updated 2026-06-04
Based on current EPA data, James City County's 9 ZIP codes maintain an above-average drinking water safety record.
How James City County Compares
How James City County Compares
James City County scores 12 points above the Virginia state average (66/100) and 10 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: James City County, Virginia
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 12.5 (asthma 10.2%, diabetes 12.2%)
Estimated additional annual cost per homeowner: $4,268, driven primarily by sea_level
Infrastructure: 0.268% 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: $4,268
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Water Safety Affordability
How much it costs to fix water issues relative to home values in James City County
Remediation costs are relatively manageable for most homeowners in James City County, representing a small fraction of property value.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Health Outcomes vs National Average
CDC PLACES data for James City 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 James City County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | JCSA - CENTRAL SYSTEM | 57,726 | 7 |
| 2 | City of Williamsburg, | 16,300 | 3 |
| 3 | Woodhaven Shores | 1,365 | 3 |
| 4 | Wexford Hills - Jcsa | 360 | 3 |
| 5 | Ware Creek Manor - Jcsa | 161 | 3 |
11 total water systems serve James City County.
All ZIP Codes in James City County
9 ZIP codes tracked in James City County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 23186 | Williamsburg | 99 | A | 1 | — |
| 2 | 23168 | Toano | 94 | A | 2 | $383K |
| 3 | 23188 | Williamsburg | 90 | A | 1 | $409K |
| 4 | 23089 | Lanexa | 84 | B | 2 | $384K |
| 5 | 23185 | Williamsburg | 80 | B | 1 | $414K |
| 6 | 23081 | Jamestown | 66 | C | 0 | — |
| 7 | 23090 | Lightfoot | 66 | C | 0 | — |
| 8 | 23694 | Lackey | 66 | C | 0 | — |
| 9 | 23696 | Seaford | 55 | C | 0 | $412K |
Recommended Buyer Guides for James City County
While many sites publish identical guide lists across every county they cover, the selection here changes by location — driven by the EPA, NSF, FEMA, and CDC datasets that describe the actual conditions documented for this jurisdiction in the federal record.
- Best Water Testing Kits — Baseline water quality check for your ZIP
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant peace of mind
Deep Dive Reports
Detailed analysis for James City County, Virginia
Overview
James City County in Virginia covers 9 ZIP codes with an average Home Safety Score of B (78/100).
5 of 9 ZIP codes 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)
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Updated daily.