Merrifield, VA: High Radon Risk — 40/100 (2026)
5 ZIP codes · 2 water systems · Updated 2026-06-03
In recent EPA cycles, Merrifield shows a persistent below-average water quality pattern within VA — documented violations span multiple service areas and have appeared consistently across reporting periods.
How Merrifield Compares
Data: EPA SDWIS Last verified: 2026-06-03
Water Quality Map: Merrifield, VA
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
How ZIP codes in Merrifield score across all safety grades.
What You Should Know About Merrifield Water
- Estimated remediation: $1,200 per household.
- CDC health risk index: 9.75.
Who Supplies Your Water in Merrifield
Water service in Merrifield, VA is split across 2 utilities out of 2 tracked federally, each operating its own infrastructure and compliance record.
Overview
We track water quality and home safety data for 5 ZIP codes in Merrifield, Virginia, covering 2 community water systems serving approximately 1,151,613 people.
No EPA violations recorded across any ZIP codes in Merrifield — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Merrifield: D (40/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Merrifield water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Merrifield
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 1 (High Risk)
- Zone 1 (High): 5 ZIP codes
- Zone 2 (Moderate): 0 ZIP codes
- Zone 3 (Low): 0 ZIP codes
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 22081 | D | VIENNA, TOWN OF | 30,000 |
| 22082 | D | VIENNA, TOWN OF | 30,000 |
| 22116 | D | VIENNA, TOWN OF | 30,000 |
| 22118 | D | FAIRFAX COUNTY WATER AUTHORITY | 1,121,613 |
| 22119 | D | FAIRFAX COUNTY WATER AUTHORITY | 1,121,613 |
All ZIP Codes in Merrifield
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
Health Outcomes in Merrifield
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
What You Can Do in Merrifield
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. An NSF-certified pitcher or under-sink filter removes most common contaminants.
- Check your home's plumbing. Homes built before 1986 may have lead solder in pipes. A licensed plumber can assess your risk.
- Review your water system's CCR. Your utility publishes an annual Consumer Confidence Report with detailed test results. Request it or find it online.
Deep Dive Reports
Detailed analysis for Merrifield, VA