NAVAL OBSERVATORY
Washington D.C. - Non-Transient Non-Community - PWSID: DC0000005
System Information
| PWSID | DC0000005 |
| System Name | NAVAL OBSERVATORY |
| System Type | Non-Transient Non-Community |
| Water Source | Surface Water Purchased |
| Activity Status | Active |
| Owner Type | Federal |
| EPA Region | 03 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jul 17, 2004 |
| Last Reported | Feb 25, 2026 |
Location & Contact
| State | Washington D.C. |
| City | WASHINGTON |
| ZIP Code | 20374 |
| Address | 1008 Eberle Place, S.E |
| Organization | HENDRICKS, RACHEL |
| Phone | 301-885-8470 |
Population & Service
| Population Served | 250 |
| Service Connections | 29 |
Drinking Water Violations (25)
This water system has 25 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Feb 11, 2025 | - | RPT | No | No | - | - | - | Resolved | Feb 11, 2025 | - | |
| Feb 11, 2025 | - | RPT | No | No | - | - | - | Resolved | Feb 11, 2025 | - | |
| Feb 11, 2025 | - | RPT | No | No | - | - | - | Resolved | Feb 11, 2025 | - | |
| Dec 31, 2016 | - | MR | No | No | - | TT | - | Resolved | Jan 25, 2017 | - | |
| Dec 31, 2016 | - | MR | No | No | - | TT | - | Resolved | Jan 25, 2017 | - | |
| Nov 1, 2016 | - | TT | Yes | No | - | - | - | Resolved | Mar 13, 2023 | - | |
| Nov 1, 2016 | - | TT | Yes | No | - | - | - | Resolved | Mar 13, 2023 | - | |
| Nov 1, 2016 | - | TT | Yes | No | - | - | - | Resolved | Mar 13, 2023 | - | |
| May 26, 2016 | - | Other | No | No | - | - | - | Resolved | May 31, 2016 | - | |
| May 26, 2016 | - | Other | No | No | - | - | - | Resolved | May 31, 2016 | - | |
| May 26, 2016 | - | Other | No | No | - | - | - | Resolved | May 31, 2016 | - | |
| May 26, 2016 | - | Other | No | No | - | - | - | Resolved | May 31, 2016 | - | |
| Apr 1, 2016 | - | Other | No | No | - | - | - | Resolved | May 11, 2017 | - | |
| Apr 1, 2016 | - | Other | No | No | - | - | - | Resolved | May 11, 2017 | - | |
| Apr 1, 2015 | Apr 30, 2015 | MR | No | No | - | 5% of samples | - | Resolved | Apr 30, 2015 | - | |
| Apr 1, 2015 | Apr 30, 2015 | MR | No | No | - | 5% of samples | - | Resolved | Apr 30, 2015 | - | |
| Apr 1, 2015 | Apr 30, 2015 | MR | No | No | - | - | - | Resolved | Apr 30, 2015 | - | |
| Apr 1, 2015 | Apr 30, 2015 | MR | No | No | - | - | - | Resolved | Apr 30, 2015 | - | |
| Jan 1, 2010 | Mar 31, 2010 | MR | No | No | - | 4.0 mg/L | - | Resolved | Mar 15, 2010 | - | |
| Jan 1, 2010 | Mar 31, 2010 | MR | No | No | - | 4.0 mg/L | - | Resolved | Mar 15, 2010 | - | |
| Jan 1, 2009 | Jan 31, 2009 | MR | No | No | - | 5% of samples | - | Resolved | Jan 31, 2009 | - | |
| Jan 1, 2009 | Jan 31, 2009 | MR | No | No | - | 5% of samples | - | Resolved | Jan 31, 2009 | - | |
| Jan 1, 2009 | Jan 31, 2009 | MR | No | No | - | 5% of samples | - | Resolved | Jan 31, 2009 | - | |
| Sep 1, 2008 | Sep 30, 2008 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2008 | - | |
| Sep 1, 2008 | Sep 30, 2008 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2008 | - |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.