Hanover County, Virginia
7 ZIP codes · Avg score 87/100 · Grade A · Updated 2026-06-03
Although county size varies, Hanover County's 7 ZIP codes share reliably safe tap water records and above-average compliance scores.
How Hanover County Compares
How Hanover County Compares
Hanover County scores 21 points above the Virginia state average (66/100) and 19 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Hanover County, Virginia
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 12.4 (asthma 10.2%, diabetes 11.7%)
Estimated additional annual cost per homeowner: $3,720, driven primarily by sea_level
Infrastructure: 0.276% avg pipe failure probability
43.4% of homes built before 1978 (lead paint era)
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: $3,720
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
41,522 housing units in Hanover County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Hanover County
Remediation costs are relatively manageable for most homeowners in Hanover 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 Hanover 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 Hanover County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | HANOVER SUBURBAN WATER SYSTEM | 57,931 | 8 |
| 2 | Cascade Mobile Estates | 100 | 6 |
| 3 | Sinclair Manor | 155 | 3 |
| 4 | Mountain Run | 225 | 2 |
| 5 | Oak Hill Estates | 350 | 0 |
13 total water systems serve Hanover County.
All ZIP Codes in Hanover County
7 ZIP codes tracked in Hanover County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 23069 | Hanover | 95 | A | 0 | $339K |
| 2 | 23146 | Rockville | 95 | A | 0 | $443K |
| 3 | 23111 | Mechanicsville | 94 | A | 3 | $325K |
| 4 | 23005 | Ashland | 91 | A | 2 | $376K |
| 5 | 23116 | Mechanicsville | 89 | A | 3 | $406K |
| 6 | 23009 | Aylett | 73 | B | 0 | $282K |
| 7 | 23047 | Doswell | 73 | B | 0 | $419K |
Recommended Buyer Guides for Hanover County
Federal and certification sources drive the ordering: EPA monitoring data, NSF certifications, FEMA flood maps, and CDC lead guidance — guides surface only when county data warrants them.
- 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 Hanover County, Virginia
Overview
Hanover County in Virginia covers 7 ZIP codes with an average Home Safety Score of A (87/100).
3 of 7 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.