Naval Anacost Annex, DC: High Radon Risk — 50/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-04
Naval Anacost Annex ranks below average for tap water safety in DC — health-based violations are documented across multiple service areas in recent EPA monitoring data.
How Naval Anacost Annex Compares
Data: EPA SDWIS Last verified: 2026-06-04
Key Facts for Naval Anacost Annex Residents
- Estimated remediation: $500 per household.
- CDC health risk index: 9.32.
Naval Anacost Annex's Water Providers
For most households in Naval Anacost Annex, DC, tap water comes from one provider — the utility that controls the local distribution system out of 1 tracked in federal record.
Overview
We track water quality and home safety data for 1 ZIP code in Naval Anacost Annex, District of Columbia (population ~311), covering 1 community water system serving approximately 632,323 people region-wide.
No EPA violations recorded across any ZIP codes in Naval Anacost Annex — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Naval Anacost Annex: D (50/100)
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
Naval Anacost Annex water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Naval Anacost Annex
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 20373 | D | D.C. WATER AND SEWER AUTHORITY | 632,323 |
All ZIP Codes in Naval Anacost Annex
- 20373 [D]
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.
Naval Anacost Annex Community Health Snapshot
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
Naval Anacost Annex Infrastructure Age
Housing age data helps assess potential lead pipe and infrastructure risks. Newer housing stock generally means lower plumbing-related contamination risk.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
For most of Naval Anacost Annex's housing stock, construction occurred after 1986 — when lead solder in plumbing was federally prohibited. The median build year of 2007 broadly reflects that newer profile.
Most homes in Naval Anacost Annex were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
What You Can Do in Naval Anacost Annex
- 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 Naval Anacost Annex, DC