Arlington County, Virginia
30 ZIP codes · Avg score 81/100 · Grade B · Updated 2026-06-03
In recent assessments, Arlington County's 30 ZIP codes record strong, consistent water safety outcomes.
How Arlington County Compares
How Arlington County Compares
Arlington County scores 15 points above the Virginia state average (66/100) and 13 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Arlington County, Virginia
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 8.7 (asthma 9%, diabetes 8%)
Estimated additional annual cost per homeowner: $2,004, driven primarily by sea_level
Infrastructure: 0.299% avg pipe failure probability, 13% of ZIPs at high risk
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: $2,004
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 Arlington County
Remediation costs are relatively manageable for most homeowners in Arlington 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 Arlington 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 Arlington County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Arlington County | 215,000 | 60 |
| 2 | Arlington County - Willston Area | 1,352 | 60 |
| 3 | Villages of Smithfield | 138 | 60 |
| 4 | FAIRFAX COUNTY WATER AUTHORITY | 1,121,613 | 10 |
| 5 | ALEXANDRIA, CITY OF | 159,200 | 4 |
All ZIP Codes in Arlington County
30 ZIP codes tracked in Arlington County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 22201 | Arlington | 82 | B | 2 | $761K |
| 2 | 22203 | Arlington | 82 | B | 2 | $810K |
| 3 | 22209 | Arlington | 82 | B | 2 | $800K |
| 4 | 22210 | Arlington | 82 | B | 2 | — |
| 5 | 22212 | Arlington | 82 | B | 2 | — |
| 6 | 22213 | Arlington | 82 | B | 2 | $1050K |
| 7 | 22214 | Arlington | 82 | B | 2 | — |
| 8 | 22215 | Arlington | 82 | B | 2 | — |
| 9 | 22216 | Arlington | 82 | B | 2 | — |
| 10 | 22217 | Arlington | 82 | B | 2 | — |
| 11 | 22218 | Arlington | 82 | B | 2 | — |
| 12 | 22219 | Arlington | 82 | B | 2 | — |
| 13 | 22222 | Arlington | 82 | B | 2 | — |
| 14 | 22225 | Arlington | 82 | B | 2 | — |
| 15 | 22226 | Arlington | 82 | B | 2 | — |
| 16 | 22227 | Arlington | 82 | B | 2 | — |
| 17 | 22230 | Arlington | 82 | B | 2 | — |
| 18 | 22234 | Arlington | 82 | B | 2 | — |
| 19 | 22240 | Arlington | 82 | B | 2 | — |
| 20 | 22241 | Arlington | 82 | B | 2 | — |
| 21 | 22242 | Arlington | 82 | B | 2 | — |
| 22 | 22243 | Arlington | 82 | B | 2 | — |
| 23 | 22244 | Arlington | 82 | B | 2 | — |
| 24 | 22245 | Arlington | 82 | B | 2 | — |
| 25 | 22246 | Arlington | 82 | B | 2 | — |
| 26 | 22202 | Arlington | 77 | B | 2 | $838K |
| 27 | 22204 | Arlington | 77 | B | 2 | $672K |
| 28 | 22205 | Arlington | 77 | B | 2 | $1071K |
| 29 | 22206 | Arlington | 77 | B | 2 | $570K |
| 30 | 22207 | Arlington | 72 | B | 2 | $1202K |
Recommended Buyer Guides for Arlington County
Four sources — EPA, NSF, FEMA, CDC — drive the match.
- 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 Arlington County, Virginia
Overview
Arlington County in Virginia covers 30 ZIP codes with an average Home Safety Score of B (81/100).
30 of 30 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.