Parcel Return Service, DC: High Radon Risk — 50/100 (2026)
6 ZIP codes · 1 water system · Updated 2026-06-03
A meaningful share of water systems in Parcel Return Service have recorded health-based violations in recent DC monitoring periods — placing the city in the lower tier for tap water safety.
How Parcel Return Service Compares
Data: EPA SDWIS Last verified: 2026-06-03
Water Quality Map: Parcel Return Service, DC
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
Safety grade breakdown for Parcel Return Service's 6 ZIP codes.
Parcel Return Service's Water Providers
Water service in Parcel Return Service, DC is organized around a single utility — one of 1 tracked by regulator, and the one that manages the local distribution network while holding primary responsibility for EPA compliance reporting.
Overview
We track water quality and home safety data for 6 ZIP codes in Parcel Return Service, District of Columbia, covering 1 community water system serving approximately 632,323 people.
No EPA violations recorded across any ZIP codes in Parcel Return Service — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Parcel Return Service: 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
Parcel Return Service water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Parcel Return Service
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 1 (High Risk)
- Zone 1 (High): 0 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 |
|---|---|---|---|
| 56901 | D | D.C. WATER AND SEWER AUTHORITY | 632,323 |
| 56915 | D | D.C. WATER AND SEWER AUTHORITY | 632,323 |
| 56920 | D | D.C. WATER AND SEWER AUTHORITY | 632,323 |
| 56933 | D | D.C. WATER AND SEWER AUTHORITY | 632,323 |
| 56944 | D | D.C. WATER AND SEWER AUTHORITY | 632,323 |
| 56972 | D | D.C. WATER AND SEWER AUTHORITY | 632,323 |
All ZIP Codes in Parcel Return Service
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.
Parcel Return Service 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
What You Can Do in Parcel Return Service
- 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 Parcel Return Service, DC