Public water system record
Naval Station Washington - Wny
On record as serving District of Columbia, DC · Serves 15,690 people
Federal records show 4 health-based violations and 11 monitoring/reporting issues for Naval Station Washington - Wny in the last ten years. The most serious issue in this window was a resolved Total Trihalomethanes (TTHMs) violation.
System profile
- Health-based violations, last 10 years
- 4
- Resolved
- 4
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 11
Key facts
- Naval Station Washington - Wny buys its water from D.C. Water and Sewer Authority.
- Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.085 mg/L, federal limit 0.08 mg/L (1.1 times the limit), 2025.
- Most recent formal enforcement: compliance order (no penalty) by EPA, September 2020.
- Record on file since 2007, with 3 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 4 unknown out of 90 service lines.
Check whether Naval Station Washington - Wny serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.082 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
220 | Jul 1, 2025 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.085 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Apr 1, 2025 | Resolved | No |
|
Revised Total Coliform Rule
Treatment technique failure
|
110 | Jan 1, 2023 | Resolved | No |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Nov 1, 2016 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Nov 17, 2025 | Resolved |
|
Public Notice
OTHER
|
Sep 18, 2025 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2025 | Resolved |
|
Revised Total Coliform Rule
RPT
|
Feb 11, 2025 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2023 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Apr 1, 2023 | Resolved |
|
Revised Total Coliform Rule
RPT
|
Jan 1, 2023 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Apr 1, 2019 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Dec 31, 2016 | Resolved |
|
Revised Total Coliform Rule
RPT
|
Dec 10, 2016 | Resolved |
Full record since 2007
EPA's records for Naval Station Washington - Wny go back to 2007. Before October 19, 2016 they list 3 health-based violations (3 resolved) and 12 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 2000s | 1 | 3 |
| 2010 to October 18, 2016 | 2 | 9 |
| October 19, 2016 to 2019 | 1 | 4 |
| 2020s | 3 | 7 |
Most recent health-based violation before October 19, 2016: Total Coliform, began July 2013, Resolved.
Show all 3 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2013 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2012 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 2009 | Resolved |
Enforcement actions
EPA took 1 formal enforcement action against Naval Station Washington - Wny in 2020. The most recent was a compliance order (no penalty) in September 2020.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Sep 18, 2020 | EPA | Compliance order (no penalty) | 1 violation (1 health-based): Long Term 2 Enhanced Surface Water Treatment Rule |
What the violations mean
Total Trihalomethanes (TTHMs)
2 incidentsDisinfection byproduct levels exceeded the federal limit
Long-term TTHM exposure may increase bladder cancer risk
Revised Total Coliform Rule
1 incidentThe system did not meet a requirement of the Revised Total Coliform Rule
Coliform and E. coli rules protect against bacteria in the distribution system
Long Term 2 Enhanced Surface Water Treatment Rule
1 incidentThe system failed required surface water treatment or filtration standards
Untreated or inadequately treated surface water can contain bacteria and viruses
Where the water comes from
Naval Station Washington - Wny buys its water from D.C. Water and Sewer Authority. It lists no wells or intakes of its own.
Buys water from
- D.C. Water and Sewer Authority Washington, DC
Annual water quality report
Naval Station Washington - Wny must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by EPA Region 3.
Certified drinking water labs by state EPA guidance for private wells