District of Columbia Water and Sewer Authority
E34347
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.
All labels observed (4)
| Label | Occurrences |
|---|---|
| DC Water | 5 |
| District of Columbia Water and Sewer Authority canonical | 5 |
| 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 ⓘ |
| alsoKnownAs | D.C. Water and Sewer Authority ⓘ |
| collaboratesWith |
District Department of Energy and Environment
ⓘ
U.S. 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 ⓘ |
| 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 ⓘ |
| 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
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: District of Columbia Water and Sewer Authority Description of subject: 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.
Referenced by (12)
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
ⓘ
linked to: District of Columbia Water and Sewer Authority
linked to: District of Columbia Water and Sewer Authority
linked to: District of Columbia Water and Sewer Authority
linked to: District of Columbia Water and Sewer Authority
linked to: District of Columbia Water and Sewer Authority
Blue Plains Advanced Wastewater Treatment Plant
→
ownedBy
→
District of Columbia Water and Sewer Authority
ⓘ
linked to: District of Columbia Water and Sewer Authority
linked to: District of Columbia Water and Sewer Authority