District of Columbia Water and Sewer Authority

E34347

government-owned corporation municipal agency public utility wastewater utility water utility

The District of Columbia Water and Sewer Authority is the public utility responsible for providing drinking water and wastewater services to Washington, D.C. and parts of the surrounding region.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (4)

Label	Occurrences
DC Water	3
District of Columbia Water and Sewer Authority canonical	2
Board of Directors of DC Water	1
D.C. Water and Sewer Authority	1

How this entity was disambiguated

This entity first appeared as the object of triple T253952 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: District of Columbia Water and Sewer Authority
Context triple: [Government of the District of Columbia, hasAgency, District of Columbia Water and Sewer Authority]

A. District of Columbia Department of Public Works
The District of Columbia Department of Public Works is the municipal agency responsible for services such as trash and recycling collection, street and alley cleaning, parking enforcement, and related public space maintenance in Washington, D.C.
B. New York City Department of Environmental Protection
The New York City Department of Environmental Protection is the municipal agency responsible for managing the city’s water supply, wastewater treatment, and environmental regulation to protect public health and natural resources.
C. District of Columbia Housing Authority
The District of Columbia Housing Authority is the public agency responsible for developing, managing, and providing affordable housing and related services to low- and moderate-income residents in Washington, D.C.
D. District of Columbia Department of Health
The District of Columbia Department of Health is the municipal public health agency responsible for protecting and promoting the health and well-being of residents and visitors in Washington, D.C.
E. Portland Water Bureau
The Portland Water Bureau is the municipal agency responsible for providing and managing the drinking water supply and related water services for the city of Portland, Oregon.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: District of Columbia Water and Sewer Authority
Target entity description: The District of Columbia Water and Sewer Authority is the public utility responsible for providing drinking water and wastewater services to Washington, D.C. and parts of the surrounding region.

A. District of Columbia Department of Public Works
The District of Columbia Department of Public Works is the municipal agency responsible for services such as trash and recycling collection, street and alley cleaning, parking enforcement, and related public space maintenance in Washington, D.C.
B. New York City Department of Environmental Protection
The New York City Department of Environmental Protection is the municipal agency responsible for managing the city’s water supply, wastewater treatment, and environmental regulation to protect public health and natural resources.
C. District of Columbia Housing Authority
The District of Columbia Housing Authority is the public agency responsible for developing, managing, and providing affordable housing and related services to low- and moderate-income residents in Washington, D.C.
D. District of Columbia Department of Health
The District of Columbia Department of Health is the municipal public health agency responsible for protecting and promoting the health and well-being of residents and visitors in Washington, D.C.
E. Portland Water Bureau
The Portland Water Bureau is the municipal agency responsible for providing and managing the drinking water supply and related water services for the city of Portland, Oregon.
F. None of above. chosen

Statements (47)

Predicate	Object
instanceOf	government-owned corporation ⓘ municipal agency ⓘ public utility ⓘ wastewater utility ⓘ water utility ⓘ
abbreviation	DC Water ⓘ linked to: District of Columbia Water and Sewer Authority
alsoKnownAs	D.C. Water and Sewer Authority ⓘ linked to: District of Columbia Water and Sewer Authority
collaboratesWith	District Department of Energy and Environment ⓘ linked to: District of Columbia Department of Energy and Environment U.S. Environmental Protection Agency ⓘ linked to: United States Environmental Protection Agency
country	United States ⓘ linked to: United States of America
focusesOn	drinking water quality ⓘ environmental compliance ⓘ infrastructure resilience ⓘ wastewater treatment efficiency ⓘ
governs	water and sewer infrastructure of the District of Columbia ⓘ
hasBoard	Board of Directors of DC Water ⓘ linked to: District of Columbia Water and Sewer Authority
hasServiceArea	National Capital Region ⓘ linked to: Washington metropolitan area
headquartersLocation	Washington, D.C. ⓘ
industry	public utilities ⓘ sewage treatment ⓘ water supply ⓘ
jurisdiction	District of Columbia government ⓘ linked to: Government of the District of Columbia
legalForm	independent authority ⓘ
locatedInTimeZone	Eastern Time Zone ⓘ
operates	Blue Plains Advanced Wastewater Treatment Plant ⓘ wastewater collection system in Washington, D.C. ⓘ
parentOrganization	District of Columbia ⓘ
regulates	water distribution system in Washington, D.C. ⓘ
responsibleFor	collecting wastewater from customers in Washington, D.C. ⓘ maintaining sewer mains in Washington, D.C. ⓘ maintaining water mains in Washington, D.C. ⓘ providing potable water to customers in Washington, D.C. ⓘ treating wastewater from parts of Maryland ⓘ
sector	public sector ⓘ
serves	District of Columbia ⓘ Washington, D.C. ⓘ parts of Maryland ⓘ parts of Virginia ⓘ
serviceType	drinking water supply ⓘ stormwater management support ⓘ wastewater collection ⓘ wastewater treatment ⓘ
shortName	DC Water ⓘ linked to: District of Columbia Water and Sewer Authority
subjectOf	rate-setting proceedings for water and sewer services in Washington, D.C. ⓘ water quality reports for Washington, D.C. ⓘ
usesWaterSource	Potomac River ⓘ
website	https://www.dcwater.com ⓘ

How these facts were elicited

Referenced by (7)

Full triples — surface form annotated when it differs from this entity's canonical label.

Government of the District of Columbia → hasAgency → District of Columbia Water and Sewer Authority ⓘ

District of Columbia Water and Sewer Authority → shortName → DC Water ⓘ