Central Valley Regional Water Quality Control Board
E638148
The Central Valley Regional Water Quality Control Board is a California state agency responsible for protecting and regulating water quality in the Central Valley region’s surface and groundwater resources.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Central Valley Regional Water Quality Control Board canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7053832 — 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: Central Valley Regional Water Quality Control Board Context triple: [California State Water Resources Control Board, subdivision, Central Valley Regional Water Quality Control Board]
-
A.
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.
-
B.
Contra Costa Water District
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.
-
C.
Alameda County Water District
Alameda County Water District is a public water agency in California responsible for providing drinking water and related services to communities in southern Alameda County, including Fremont, Newark, and Union City.
-
D.
Santa Clara Valley Water District
Santa Clara Valley Water District is the public agency responsible for managing water supply, flood protection, and stream stewardship for Santa Clara County in California’s Silicon Valley.
-
E.
North Coast Regional Water Quality Control Board
The North Coast Regional Water Quality Control Board is a California state agency responsible for protecting and regulating water quality in the North Coast region, including rivers, lakes, and coastal waters such as those in the Eel River Basin.
- 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: Central Valley Regional Water Quality Control Board Target entity description: The Central Valley Regional Water Quality Control Board is a California state agency responsible for protecting and regulating water quality in the Central Valley region’s surface and groundwater resources.
-
A.
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.
-
B.
Contra Costa Water District
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.
-
C.
Alameda County Water District
Alameda County Water District is a public water agency in California responsible for providing drinking water and related services to communities in southern Alameda County, including Fremont, Newark, and Union City.
-
D.
Santa Clara Valley Water District
Santa Clara Valley Water District is the public agency responsible for managing water supply, flood protection, and stream stewardship for Santa Clara County in California’s Silicon Valley.
-
E.
North Coast Regional Water Quality Control Board
The North Coast Regional Water Quality Control Board is a California state agency responsible for protecting and regulating water quality in the North Coast region, including rivers, lakes, and coastal waters such as those in the Eel River Basin.
- F. None of above. chosen
Statements (42)
| Predicate | Object |
|---|---|
| instanceOf |
California regional water quality control board
ⓘ
state government agency ⓘ |
| collaboratesWith |
State Water Resources Control Board
NERFINISHED
ⓘ
federal environmental agencies ⓘ local governments in the Central Valley ⓘ other California regional water quality control boards ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| focusArea |
Delta and tributary waterways
ⓘ
Sacramento Valley groundwater basins NERFINISHED ⓘ Sacramento–San Joaquin River watershed NERFINISHED ⓘ San Joaquin Valley groundwater basins NERFINISHED ⓘ |
| goal |
protection of aquatic ecosystems
ⓘ
protection of beneficial uses of water ⓘ protection of public health ⓘ |
| headquartersLocation | Central Valley region of California NERFINISHED ⓘ |
| jurisdiction | Central Valley region of California NERFINISHED ⓘ |
| legalBasis | Porter-Cologne Water Quality Control Act NERFINISHED ⓘ |
| mandate | protecting and regulating water quality in the Central Valley region’s surface and groundwater resources ⓘ |
| parentAgency | California Environmental Protection Agency NERFINISHED ⓘ |
| partOf |
California Environmental Protection Agency
NERFINISHED
ⓘ
State Water Resources Control Board regional board system NERFINISHED ⓘ |
| regulates |
groundwater quality in the Central Valley
ⓘ
surface water quality in the Central Valley ⓘ |
| regulatoryAuthority |
imposition of administrative civil liabilities
ⓘ
issuance of enforcement orders ⓘ |
| responsibleFor |
developing and implementing basin plans
ⓘ
enforcing state and federal water quality laws ⓘ issuing National Pollutant Discharge Elimination System permits ⓘ issuing waste discharge requirements ⓘ monitoring water quality in the Central Valley ⓘ overseeing cleanup of contaminated groundwater sites ⓘ overseeing cleanup of contaminated surface water sites ⓘ regulating agricultural discharges to surface and groundwater ⓘ regulating industrial wastewater discharges ⓘ regulating municipal wastewater discharges ⓘ regulating stormwater discharges ⓘ |
| sector |
environmental protection
ⓘ
water resources management ⓘ |
| state |
California, United States
ⓘ
surface form:
California
|
| supervises | regulated dischargers in the Central Valley region ⓘ |
| usesTool |
total maximum daily loads
ⓘ
water quality objectives ⓘ |
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: Central Valley Regional Water Quality Control Board Description of subject: The Central Valley Regional Water Quality Control Board is a California state agency responsible for protecting and regulating water quality in the Central Valley region’s surface and groundwater resources.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
California State Water Resources Control Board
→
subdivision
→
Central Valley Regional Water Quality Control Board
ⓘ