Portsmouth County, Virginia
8 ZIP codes · Avg score 88/100 · Grade A · Updated 2026-06-04
Portsmouth County maintains reliable drinking water quality across all 8 of its tracked ZIP codes.
How Portsmouth County Compares
How Portsmouth County Compares
Portsmouth County scores 22 points above the Virginia state average (66/100) and 20 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: Portsmouth County, Virginia
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.5 (asthma 12.3%, diabetes 15.8%)
Estimated additional annual cost per homeowner: $5,446, driven primarily by sea_level
Infrastructure: 0.397% avg pipe failure probability, 33% of ZIPs at high risk
82% 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: $5,446
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
43,096 housing units in Portsmouth 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 Portsmouth County
Remediation costs are relatively manageable for most homeowners in Portsmouth 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 Portsmouth County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 4 systems in Portsmouth County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | PORTSMOUTH, CITY OF | 97,915 | 0 |
| 2 | Naval Support Activity Portsmouth | 17,000 | 0 |
| 3 | City of Suffolk, | 69,822 | 0 |
| 4 | City of Chesapeake - Western Branch Sys | 32,326 | 0 |
All ZIP Codes in Portsmouth County
8 ZIP codes tracked in Portsmouth County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 23705 | Portsmouth | 99 | A | 0 | — |
| 2 | 23708 | Portsmouth | 99 | A | 0 | — |
| 3 | 23709 | Portsmouth | 99 | A | 0 | — |
| 4 | 23702 | Portsmouth | 85 | A | 0 | $189K |
| 5 | 23701 | Portsmouth | 80 | B | 0 | $219K |
| 6 | 23703 | Portsmouth | 80 | B | 0 | $274K |
| 7 | 23704 | Portsmouth | 80 | B | 0 | $197K |
| 8 | 23707 | Portsmouth | 80 | B | 0 | $222K |
Recommended Buyer Guides for Portsmouth County
If FEMA records flag flood-top-risk status or EPA samples show PFAS exceedances, the matching logic lifts emergency-water and PFAS-rated filtration into the recommendations — federal data drives the order, not retailer arrangements.
- Best Lead Paint Test Kits — 82% of homes built before 1978
Deep Dive Reports
Detailed analysis for Portsmouth County, Virginia
Overview
Portsmouth County in Virginia covers 8 ZIP codes with an average Home Safety Score of A (88/100).
No EPA violations recorded across any tracked ZIP codes in Portsmouth County.
← 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.