Santa Ana Regional Water Quality Control Board
E640699
The Santa Ana Regional Water Quality Control Board is a regional agency in California responsible for protecting and regulating water quality within the Santa Ana River watershed and surrounding areas.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Santa Ana Regional Water Quality Control Board canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7053835 — 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: Santa Ana Regional Water Quality Control Board Context triple: [California State Water Resources Control Board, subdivision, Santa Ana Regional Water Quality Control Board]
-
A.
Los Angeles Regional Water Quality Control Board
The Los Angeles Regional Water Quality Control Board is a regional environmental regulatory agency responsible for protecting and improving water quality in the Los Angeles area under California’s statewide water governance system.
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B.
Central Valley Regional Water Quality Control Board
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.
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C.
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.
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D.
Los Angeles County Flood Control District
The Los Angeles County Flood Control District is a public agency responsible for regional flood protection, stormwater management, and water conservation infrastructure throughout Los Angeles County.
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E.
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.
- 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: Santa Ana Regional Water Quality Control Board Target entity description: The Santa Ana Regional Water Quality Control Board is a regional agency in California responsible for protecting and regulating water quality within the Santa Ana River watershed and surrounding areas.
-
A.
Los Angeles Regional Water Quality Control Board
The Los Angeles Regional Water Quality Control Board is a regional environmental regulatory agency responsible for protecting and improving water quality in the Los Angeles area under California’s statewide water governance system.
-
B.
Central Valley Regional Water Quality Control Board
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.
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C.
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.
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D.
Los Angeles County Flood Control District
The Los Angeles County Flood Control District is a public agency responsible for regional flood protection, stormwater management, and water conservation infrastructure throughout Los Angeles County.
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E.
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.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
government agency
ⓘ
regional water quality control board ⓘ regulatory agency ⓘ state agency ⓘ |
| appliesRegulation |
Clean Water Act (implementation at regional level)
NERFINISHED
ⓘ
Porter-Cologne Water Quality Control Act NERFINISHED ⓘ |
| collaboratesWith |
State Water Resources Control Board
NERFINISHED
ⓘ
other California Regional Water Quality Control Boards ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| goal |
prevention of water pollution and nuisance
ⓘ
protection of beneficial uses of water ⓘ |
| hasAuthority |
adopt regional water quality control plans
ⓘ
issue National Pollutant Discharge Elimination System permits ⓘ issue waste discharge requirements ⓘ take enforcement actions for water quality violations ⓘ |
| headquartersLocation |
California, United States
ⓘ
surface form:
California
|
| jurisdiction |
Santa Ana River watershed
NERFINISHED
ⓘ
portions of Orange County, California ⓘ portions of Riverside County, California ⓘ portions of San Bernardino County, California ⓘ |
| locatedIn | Santa Ana Region, California NERFINISHED ⓘ |
| partOf |
California Environmental Protection Agency
NERFINISHED
ⓘ
State Water Resources Control Board system ⓘ |
| regulates |
groundwater quality
ⓘ
industrial discharges to waters of the region ⓘ municipal separate storm sewer systems (MS4s) ⓘ stormwater discharges ⓘ surface water quality ⓘ wastewater discharges ⓘ |
| regulatoryArea |
groundwater cleanup and remediation
ⓘ
nonpoint source pollution control ⓘ water quality monitoring and assessment ⓘ water quality standards ⓘ |
| responsibleFor |
developing Total Maximum Daily Loads (TMDLs)
ⓘ
implementing state and federal water quality laws ⓘ monitoring water quality conditions ⓘ protecting water quality ⓘ regulating discharges of pollutants to waters of the region ⓘ |
| sector |
environmental protection
ⓘ
water resources management ⓘ |
| state |
California, United States
ⓘ
surface form:
California
|
| supervises | implementation of basin plan requirements ⓘ |
| usesInstrument |
NPDES permits
ⓘ
administrative civil liability orders ⓘ cease and desist orders ⓘ cleanup and abatement orders ⓘ waste discharge requirements orders ⓘ |
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: Santa Ana Regional Water Quality Control Board Description of subject: The Santa Ana Regional Water Quality Control Board is a regional agency in California responsible for protecting and regulating water quality within the Santa Ana River watershed and surrounding areas.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
California State Water Resources Control Board
→
subdivision
→
Santa Ana Regional Water Quality Control Board
ⓘ