Is Washington Navy Yard, DC Tap Water Safe to Drink?
Washington Navy Yard tap water meets federal Safe Drinking Water Act standards but 1 of 4 ZIP codes show detections above EPA health guidelines, primarily for lithium. A certified filter is recommended for households that want an additional layer of protection.
Where Does Washington Navy Yard Get Its Water?
Water in Washington Navy Yard, DC is provided by 2 public water systems: D.C. WATER AND SEWER AUTHORITY and NAVAL STATION WASHINGTON - WNY.
How Is Washington Navy Yard Tap Water Treated?
Treated water is disinfected using calcium hypochlorite and free chlorine. Treatment includes conventional treatment (coagulation, flocculation, and filtration).
What's in Washington Navy Yard Tap Water?
The following contaminants were detected most frequently in Washington Navy Yard public water systems. 1 of 4 ZIP codes showed detections above EPA health guidelines.
| Contaminant | Peak detected | EPA guideline | ZIPs detected | Status |
|---|---|---|---|---|
| lithium | 12 µg/L | 10 µg/L | 1 ZIP | Above guideline |
| PFTrDA | 0.007 µg/L | — | 0 ZIPs | Within guideline |
| 11Cl-PF3OUdS | 0.005 µg/L | — | 0 ZIPs | Within guideline |
| HFPO-DA | 0.005 µg/L | — | 0 ZIPs | Within guideline |
| PFBA | 0.005 µg/L | — | 0 ZIPs | Within guideline |
Health Risk Profile for Washington Navy Yard
Based on EPA monitoring data, 1 of 4 ZIP codes in Washington Navy Yard have recorded detections above EPA health guidelines. Sensitive populations such as infants, pregnant individuals, and those with weakened immune systems may benefit from an additional layer of protection such as a certified point-of-use filter.
Best Broad-Spectrum Filters for This Water Profile
This city profile includes PFAS detections, chlorine disinfection, and other dissolved contaminants. Reverse osmosis (RO) systems certified under NSF/ANSI 58 provide broad reduction coverage; for PFAS specifically, confirm NSF/ANSI P473 or equivalent PFAS reduction certification.
8-stage tankless RO system certified to NSF/ANSI 58, reduces 1,000+ contaminants including PFAS, lead, arsenic, fluoride, and nitrates.
See recommendations matched to your exact address: choose your ZIP code below.
Frequently Asked Questions about Washington Navy Yard Tap Water
Is Washington Navy Yard tap water safe to drink?
Washington Navy Yard tap water meets Safe Drinking Water Act requirements but 1 of 4 ZIP codes show contaminant levels above EPA health-based guidelines. A certified point-of-use filter adds an extra layer of protection.
What contaminants are in Washington Navy Yard tap water?
The most commonly detected contaminants in Washington Navy Yard water systems include: lithium, PFTrDA, 11Cl-PF3OUdS. See the ZIP-level reports for exact measurements and EPA guideline comparisons.
Where does Washington Navy Yard get its drinking water?
Washington Navy Yard receives water from 2 public water systems, including D.C. WATER AND SEWER AUTHORITY.
Do I need a water filter in Washington Navy Yard?
If your ZIP code is among those with detections above EPA health guidelines, choose a filter certified for the specific contaminants shown in your ZIP report. Reverse osmosis is generally the broadest option for PFAS, lithium, and many other dissolved contaminants.
How often is Washington Navy Yard tap water tested?
Public water systems in Washington Navy Yard are required by the EPA to test for regulated contaminants on schedules ranging from daily (for microbials and disinfectants) to annual or triennial (for many chemical contaminants). Results are published in annual Consumer Confidence Reports (CCRs). The data on this page reflects the most recent available EPA monitoring results, with the latest sample date of 2024-10-16.
Tap water reports by ZIP in Washington Navy Yard
- 20374 - Washington Navy Yard tap water report Higher concern
- 20376 - Washington Navy Yard tap water report Some concern
- 20391 - Washington Navy Yard tap water report Some concern
- 20398 - Washington Navy Yard tap water report Some concern
Water utilities serving Washington Navy Yard, DC
Service area boundaries are approximate and based on state filings or modeled estimates. Contact your utility to confirm exact service at a specific address.
- D.C. WATER AND SEWER AUTHORITYAction advised
- D.C. WATER AND SEWER AUTHORITYAction advised
- D.C. WATER AND SEWER AUTHORITYAction advised
- D.C. WATER AND SEWER AUTHORITYAction advised
- WASHINGTON AQUEDUCT DIVISION.Action advised
- WASHINGTON AQUEDUCT DIVISION.Action advised
- WASHINGTON AQUEDUCT DIVISION.Action advised
- WASHINGTON AQUEDUCT DIVISION.Action advised