Contra Costa Water District
E310418
Contra Costa Water District is a public water agency in California that supplies drinking and irrigation water to communities in and around Contra Costa County.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Contra Costa Water District canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T2907437 — 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: Contra Costa Water District Context triple: [Contra Costa Canal, serves, Contra Costa Water District]
-
A.
Valley Water
Valley Water is a picturesque pond located within Brooklyn’s historic Green-Wood Cemetery, known for its tranquil scenery and surrounding monuments.
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B.
California State Water Resources Control Board
The California State Water Resources Control Board is a state agency responsible for safeguarding water quality and managing the allocation and use of California’s water resources.
-
C.
Mojave Water Agency
The Mojave Water Agency is a regional water management and planning agency in Southern California responsible for securing, conserving, and overseeing water resources for communities in the Mojave Desert region.
-
D.
San Francisco Public Utilities Commission
The San Francisco Public Utilities Commission is the city agency responsible for providing and managing essential services such as water, power, and wastewater for San Francisco and surrounding communities.
-
E.
Tehama-Colusa Canal Authority
The Tehama-Colusa Canal Authority is a regional water management agency in California responsible for operating and maintaining the Tehama-Colusa Canal to deliver irrigation water to participating districts.
- 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: Contra Costa Water District Target entity description: Contra Costa Water District is a public water agency in California that supplies drinking and irrigation water to communities in and around Contra Costa County.
-
A.
Valley Water
Valley Water is a picturesque pond located within Brooklyn’s historic Green-Wood Cemetery, known for its tranquil scenery and surrounding monuments.
-
B.
California State Water Resources Control Board
The California State Water Resources Control Board is a state agency responsible for safeguarding water quality and managing the allocation and use of California’s water resources.
-
C.
Mojave Water Agency
The Mojave Water Agency is a regional water management and planning agency in Southern California responsible for securing, conserving, and overseeing water resources for communities in the Mojave Desert region.
-
D.
San Francisco Public Utilities Commission
The San Francisco Public Utilities Commission is the city agency responsible for providing and managing essential services such as water, power, and wastewater for San Francisco and surrounding communities.
-
E.
Tehama-Colusa Canal Authority
The Tehama-Colusa Canal Authority is a regional water management agency in California responsible for operating and maintaining the Tehama-Colusa Canal to deliver irrigation water to participating districts.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
public water agency
ⓘ
special district ⓘ water utility ⓘ |
| collaboratesWith |
other Bay Area water agencies
ⓘ
state water agencies ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| countyServed | Contra Costa County ⓘ |
| focusesOn |
Delta water quality protection
ⓘ
drought resilience ⓘ environmental stewardship ⓘ water supply reliability ⓘ |
| fundingSource |
capital improvement charges
ⓘ
connection fees ⓘ water rates ⓘ |
| governedBy | elected board of directors ⓘ |
| hasResponsibility |
infrastructure maintenance
ⓘ
water conservation programs ⓘ water quality management ⓘ water supply planning ⓘ |
| headquartersLocation |
Concord, California, United States
ⓘ
surface form:
Concord, California
|
| implementsProgram |
drought management plans
ⓘ
rebate programs for efficient water use ⓘ water conservation education ⓘ |
| industry |
public utilities
ⓘ
water supply ⓘ |
| jurisdiction | Contra Costa County ⓘ |
| legalStatus | independent special district ⓘ |
| operatesFacility |
Contra Costa Canal
ⓘ
Los Vaqueros Reservoir ⓘ treated water distribution system ⓘ water treatment plants ⓘ |
| regionServed | San Francisco Bay Area ⓘ |
| regulates | local water use through conservation measures ⓘ |
| sector | public sector ⓘ |
| serviceAreaIncludes |
Contra Costa County
ⓘ
surface form:
Central Contra Costa County
agricultural customers ⓘ industrial customers ⓘ municipal customers ⓘ parts of Eastern Contra Costa County ⓘ residential customers ⓘ |
| serviceType |
drinking water supply
ⓘ
irrigation water supply ⓘ retail water supply ⓘ wholesale water supply ⓘ |
| state |
California, United States
ⓘ
surface form:
California
|
| uses |
surface water
ⓘ
treated imported water ⓘ |
| waterSource |
Contra Costa Canal
ⓘ
Sacramento–San Joaquin River Delta ⓘ
surface form:
Sacramento–San Joaquin Delta
|
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: Contra Costa Water District Description of subject: Contra Costa Water District is a public water agency in California that supplies drinking and irrigation water to communities in and around Contra Costa County.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.