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Community Water System · PWS DC0000001

Washington Aqueduct Division.

Washington, District of Columbia 20016 - drinking water served from surface water sources to 0 people, tracked in EPA SDWIS and UCMR5.

0
People served
13
EPA violations
5
Health-based
Untested
UCMR5 result

The verdict

EPA records 13 drinking-water violations at Washington Aqueduct Division., 38% of them health-based - below the District of Columbia per-system average.

13
Total EPA violations on record
38%
Health-based (MCL / treatment failure)
0
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Washington Aqueduct Division.

Washington Aqueduct Division. is a federal-owned community water system that delivers drinking water to 0 residents in Washington, District of Columbia (District of Columbia County) through 3 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 13 total violations for this system , of which 5 (38%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 7 monitoring and reporting violations are on file. The most recent violation on record dates to 2020.

The most frequently cited contaminant at this system is Interim Enhanced Surface Water Treatment Rule, recorded in 6 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

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%).

Washington Aqueduct Division.'s 13 violations sit below 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.

Population Served
0
Total Violations
13
Health-Based Violations
5
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Federal
Connections
3
County
District of Columbia
School/Daycare
No
MCL Violations
3
Monitoring Violations
7
Treatment Tech Violations
2

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Interim Enhanced Surface Water Treatment Rule MR 6 2020
Coliform (TCR) MCL 3 1993
Interim Enhanced Surface Water Treatment Rule TT 2 2008
Glyphosate MR 1 2003

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 Washington Aqueduct Division..

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 DC0000001 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
2020 Interim Enhanced Surface Water Treatment Rule MR 6 SDWIS / DC0000001 / 0300
2008 Interim Enhanced Surface Water Treatment Rule TT 2 SDWIS / DC0000001 / 0300
2003 Glyphosate MR 1 SDWIS / DC0000001 / 2034
1993 Coliform (TCR) MCL 3 SDWIS / DC0000001 / 3100

How Washington Aqueduct Division. Compares

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

Metric Washington Aqueduct Division. District of Columbia avg Federal benchmark
Total violations 13 52.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 5 14.4 Indicates a contaminant exceeded a federal MCL
PFAS detection None 100% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 0 133,515 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 Washington Aqueduct Division. water safe to drink? ▼
Washington Aqueduct Division. (PWS ID: DC0000001) has 13 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 0 people using Surface Water sources.
How many people does Washington Aqueduct Division. serve? ▼
Washington Aqueduct Division. serves 0 people in Washington, District of Columbia. It is a Federal-owned system using Surface Water water sources with 3 service connections.
What type of violations does Washington Aqueduct Division. have? ▼
Washington Aqueduct Division. has 13 total violations: 5 health-based violations (MCL exceedances or treatment failures), 7 monitoring/reporting violations, and 2 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Washington Aqueduct Division. water? ▼
No PFAS testing data is available for Washington Aqueduct Division. under the EPA's UCMR5 monitoring program.
What water source does Washington Aqueduct Division. use? ▼
Washington Aqueduct Division. 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. This data is provided for informational purposes only.

Read our methodology - how this data is sourced, computed, and verified.

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.