Alexandria County, Virginia
14 ZIP codes · Avg score 94/100 · Grade A · Updated 2026-06-03
For households in Alexandria County, the 14 ZIP codes on record show consistently safe tap water.
How Alexandria County Compares
How Alexandria County Compares
Alexandria County scores 28 points above the Virginia state average (66/100) and 26 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Alexandria County, Virginia
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 10.4 (asthma 9.9%, diabetes 9.9%)
Estimated additional annual cost per homeowner: $2,557, driven primarily by sea_level
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $2,557
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 Alexandria County
Remediation costs are relatively manageable for most homeowners in Alexandria 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 Alexandria 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 Alexandria County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | ALEXANDRIA, CITY OF | 159,200 | 0 |
| 2 | Waverly, Town of | 2,640 | 0 |
| 3 | Tauxemont | 250 | 0 |
| 4 | FAIRFAX COUNTY WATER AUTHORITY | 1,121,613 | 0 |
All ZIP Codes in Alexandria County
14 ZIP codes tracked in Alexandria County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 22320 | Alexandria | 99 | A | 0 | — |
| 2 | 22321 | Alexandria | 99 | A | 0 | — |
| 3 | 22331 | Alexandria | 99 | A | 0 | — |
| 4 | 22332 | Alexandria | 99 | A | 0 | — |
| 5 | 22333 | Alexandria | 99 | A | 0 | — |
| 6 | 22334 | Alexandria | 99 | A | 0 | — |
| 7 | 22336 | Alexandria | 99 | A | 0 | — |
| 8 | 22350 | Alexandria | 99 | A | 0 | — |
| 9 | 22313 | Alexandria | 95 | A | 0 | — |
| 10 | 22302 | Alexandria | 90 | A | 0 | $631K |
| 11 | 22304 | Alexandria | 90 | A | 0 | $496K |
| 12 | 22301 | Alexandria | 85 | A | 0 | $998K |
| 13 | 22305 | Alexandria | 85 | A | 0 | $817K |
| 14 | 22314 | Alexandria | 85 | A | 0 | $856K |
Recommended Buyer Guides for Alexandria County
Methodologically, the recommendation order reflects severity in the federal record: contaminants flagged in EPA detection records for this county outrank generic water concerns, FEMA-confirmed hazard ratings shift emergency-related categories upward, and CDC lead-exposure markers govern when lead-test kits and certified filters appear at the top of the list.
- 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 Alexandria County, Virginia
Overview
Alexandria County in Virginia covers 14 ZIP codes with an average Home Safety Score of A (94/100).
No EPA violations recorded across any tracked ZIP codes in Alexandria 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.