PlainWater

Community Water System · PWS DC0000003

Naval Station Washington - Wny

Washington, District of Columbia 20374 - drinking water served from surface water sources to 15,690 people, tracked in EPA SDWIS and UCMR5.

15,690
People served
62
EPA violations
15
Health-based
2 PFAS
UCMR5 result

The verdict

EPA records 62 drinking-water violations at Naval Station Washington - Wny, 24% of them health-based - above the District of Columbia per-system average, and UCMR5 testing detected 2 PFAS compounds.

62
Total EPA violations on record
24%
Health-based (MCL / treatment failure)
15,690
People served by this system
2
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Naval Station Washington - Wny

Naval Station Washington - Wny is a federal-owned community water system that delivers drinking water to 15,690 residents in Washington, District of Columbia (District of Columbia County) through 90 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 62 total violations for this system , of which 15 (24%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 23 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Consumer Confidence Rule, recorded in 10 violations (Other). Under EPA's UCMR5 PFAS monitoring program, 2 PFAS compounds were detected in samples collected from this system, with a maximum reported concentration of 4.3 ppt (parts per trillion). PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

Across District of Columbia, EPA tracks 5 public water systems serving 667,575 people, with 263 cumulative violations and 72 health-based violations on record. About 100% of systems in the state carry at least one violation, and state-wide the average per system is 52.6 violations. Statewide, 3 of 3 UCMR5-tested systems have reported PFAS detections (100%).

Naval Station Washington - Wny's 62 violations sit above the District of Columbia average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

PFAS Detected

2 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served
15,690
Total Violations
62
Health-Based Violations
15
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Federal
Connections
90
County
District of Columbia
School/Daycare
No
MCL Violations
9
Monitoring Violations
23
Treatment Tech Violations
6

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Consumer Confidence Rule Other 10 2025
Coliform (TCR) MR 10 2015
Revised Total Coliform Rule RPT 9 2025
Coliform (TCR) MCL 7 2013
Public Notice Other 5 2025
Long Term 2 Enhanced Surface Water Treatment Rule TT 3 2016
Revised Total Coliform Rule TT 3 2023
Chloramine MR 3 2010
Revised Total Coliform Rule MON 3 2023
Lead and Copper Rule MR 2 2016
TTHM MR 2 2019
TTHM MCL 2 2025
Long Term 2 Enhanced Surface Water Treatment Rule MR 2 2015
Total Haloacetic Acids (HAA5) MR 1 2019

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 3 of 116 samples detected PFAS.

Contaminant Date Result MRL Status
11Cl-PF3OUdS 7/17/2024 <5.00 ppt 5.00 ppt Not Detected
PFBS 7/17/2024 <3.00 ppt 3.00 ppt Not Detected
4:2 FTS 7/17/2024 <3.00 ppt 3.00 ppt Not Detected
PFTA 7/17/2024 <8.00 ppt 8.00 ppt Not Detected
PFTrDA 7/17/2024 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 7/17/2024 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 7/17/2024 <6.00 ppt 6.00 ppt Not Detected
PFHpS 7/17/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeS 7/17/2024 <4.00 ppt 4.00 ppt Not Detected
NFDHA 7/17/2024 <20.00 ppt 20.00 ppt Not Detected
PFEESA 7/17/2024 <3.00 ppt 3.00 ppt Not Detected
PFMBA 7/17/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeA 7/17/2024 4.30 ppt 3.00 ppt Detected
PFHxA 7/17/2024 3.80 ppt 3.00 ppt Detected
8:2 FTS 7/17/2024 <5.00 ppt 5.00 ppt Not Detected
PFHxS 7/17/2024 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 7/17/2024 <5.00 ppt 5.00 ppt Not Detected
PFBA 7/17/2024 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 7/17/2024 <5.00 ppt 5.00 ppt Not Detected
ADONA 7/17/2024 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 7/17/2024 <2.00 ppt 2.00 ppt Not Detected
PFUnA 7/17/2024 <2.00 ppt 2.00 ppt Not Detected
PFDoA 7/17/2024 <3.00 ppt 3.00 ppt Not Detected
PFDA 7/17/2024 <3.00 ppt 3.00 ppt Not Detected
PFOA 7/17/2024 <4.00 ppt 4.00 ppt Not Detected
PFOS 7/17/2024 <4.00 ppt 4.00 ppt Not Detected
PFNA 7/17/2024 <4.00 ppt 4.00 ppt Not Detected
PFMPA 7/17/2024 <4.00 ppt 4.00 ppt Not Detected
PFHpA 7/17/2024 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 4/22/2024 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 4/22/2024 <2.00 ppt 2.00 ppt Not Detected
ADONA 4/22/2024 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 4/22/2024 <5.00 ppt 5.00 ppt Not Detected
PFBA 4/22/2024 <5.00 ppt 5.00 ppt Not Detected
6:2 FTS 4/22/2024 <5.00 ppt 5.00 ppt Not Detected
PFMBA 4/22/2024 <3.00 ppt 3.00 ppt Not Detected
PFMPA 4/22/2024 <4.00 ppt 4.00 ppt Not Detected
PFPeA 4/22/2024 <3.00 ppt 3.00 ppt Not Detected
PFEESA 4/22/2024 <3.00 ppt 3.00 ppt Not Detected
11Cl-PF3OUdS 4/22/2024 <5.00 ppt 5.00 ppt Not Detected
NFDHA 4/22/2024 <20.00 ppt 20.00 ppt Not Detected
PFOS 4/22/2024 <4.00 ppt 4.00 ppt Not Detected
PFTA 4/22/2024 <8.00 ppt 8.00 ppt Not Detected
4:2 FTS 4/22/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeS 4/22/2024 <4.00 ppt 4.00 ppt Not Detected
PFTrDA 4/22/2024 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 4/22/2024 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 4/22/2024 <6.00 ppt 6.00 ppt Not Detected
PFBS 4/22/2024 <3.00 ppt 3.00 ppt Not Detected
PFHpS 4/22/2024 <3.00 ppt 3.00 ppt Not Detected

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Naval Station Washington - Wny.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID DC0000003 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

District of Columbia Drinking Water Authority

District of Columbia's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find DC regulator via EPA SDWIS

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2025 Consumer Confidence Rule Other 10 SDWIS / DC0000003 / 7000
2025 Revised Total Coliform Rule RPT 9 SDWIS / DC0000003 / 8000
2025 Public Notice Other 5 SDWIS / DC0000003 / 7500
2025 TTHM MCL 2 SDWIS / DC0000003 / 2950
2023 Revised Total Coliform Rule TT 3 SDWIS / DC0000003 / 8000
2023 Revised Total Coliform Rule MON 3 SDWIS / DC0000003 / 8000
2019 TTHM MR 2 SDWIS / DC0000003 / 2950
2019 Total Haloacetic Acids (HAA5) MR 1 SDWIS / DC0000003 / 2456
2016 Long Term 2 Enhanced Surface Water Treatment Rule TT 3 SDWIS / DC0000003 / 0800
2016 Lead and Copper Rule MR 2 SDWIS / DC0000003 / 5000
2015 Coliform (TCR) MR 10 SDWIS / DC0000003 / 3100
2015 Long Term 2 Enhanced Surface Water Treatment Rule MR 2 SDWIS / DC0000003 / 0800
2013 Coliform (TCR) MCL 7 SDWIS / DC0000003 / 3100
2010 Chloramine MR 3 SDWIS / DC0000003 / 1006

How Naval Station Washington - Wny Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Naval Station Washington - Wny District of Columbia avg Federal benchmark
Total violations 62 52.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 15 14.4 Indicates a contaminant exceeded a federal MCL
PFAS detection 2 compounds 100% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 15,690 133,515 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 5 regulated public water systems in District of Columbia.

Federal MCL reference, Safe Drinking Water Act thresholds
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Naval Station Washington - Wny water safe to drink?
Naval Station Washington - Wny (PWS ID: DC0000003) has 62 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 2 PFAS compounds found. This system serves 15,690 people using Surface Water sources.
How many people does Naval Station Washington - Wny serve?
Naval Station Washington - Wny serves 15,690 people in Washington, District of Columbia. It is a Federal-owned system using Surface Water water sources with 90 service connections.
What type of violations does Naval Station Washington - Wny have?
Naval Station Washington - Wny has 62 total violations: 15 health-based violations (MCL exceedances or treatment failures), 23 monitoring/reporting violations, and 6 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Naval Station Washington - Wny water?
Yes. UCMR5 testing detected 2 PFAS compounds in Naval Station Washington - Wny's water supply: PFPeA, PFHxA. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does Naval Station Washington - Wny use?
Naval Station Washington - Wny uses Surface Water as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from?
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.
Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.