Los Angeles Regional Water Quality Control Board
E638147
environmental regulatory agency
government agency
regional water quality control board
state agency of California
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.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Los Angeles Regional Water Quality Control Board canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T7053831 — 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: Los Angeles Regional Water Quality Control Board Context triple: [California State Water Resources Control Board, subdivision, Los Angeles Regional Water Quality Control Board]
-
A.
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.
-
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.
Metropolitan Water District of Southern California
The Metropolitan Water District of Southern California is a regional wholesale water agency that imports, manages, and distributes water supplies to numerous cities and local water districts across Southern California.
-
D.
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.
-
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: Los Angeles Regional Water Quality Control Board Target entity description: 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.
-
A.
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.
-
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.
Metropolitan Water District of Southern California
The Metropolitan Water District of Southern California is a regional wholesale water agency that imports, manages, and distributes water supplies to numerous cities and local water districts across Southern California.
-
D.
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.
-
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 (48)
| Predicate | Object |
|---|---|
| instanceOf |
environmental regulatory agency
ⓘ
government agency ⓘ regional water quality control board ⓘ state agency of California ⓘ |
| appliesLaw |
California Porter-Cologne Water Quality Control Act
NERFINISHED
ⓘ
federal Clean Water Act NERFINISHED ⓘ |
| appointedBy | Governor of California NERFINISHED ⓘ |
| canIssue |
administrative civil liability orders
ⓘ
cleanup and abatement orders ⓘ |
| collaboratesWith |
federal environmental agencies
ⓘ
local governments in the Los Angeles region ⓘ water agencies and utilities in the Los Angeles region ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| develops | basin plans for water quality control ⓘ |
| enforces |
NPDES permit conditions
ⓘ
waste discharge requirements ⓘ water quality standards ⓘ |
| focusesOn |
pollution prevention
ⓘ
protection of beneficial uses of water ⓘ restoration of impaired water bodies ⓘ |
| hasBoardType | seven-member citizen board ⓘ |
| hasStaff | professional staff including engineers and scientists ⓘ |
| headquartersLocation | Los Angeles, California NERFINISHED ⓘ |
| implementsPolicyOf |
California Environmental Protection Agency
NERFINISHED
ⓘ
State Water Resources Control Board NERFINISHED ⓘ |
| jurisdiction |
California, United States
ⓘ
surface form:
State of California
|
| mission | to protect and improve water quality in the Los Angeles region ⓘ |
| monitors |
coastal waters in the Los Angeles region
ⓘ
groundwater basins in the Los Angeles region ⓘ rivers and streams in the Los Angeles region ⓘ |
| oversees |
National Pollutant Discharge Elimination System permits in its region
NERFINISHED
ⓘ
Total Maximum Daily Load implementation in its region ⓘ groundwater cleanup and remediation projects in its region ⓘ stormwater management programs in its region ⓘ waste discharge requirements in its region ⓘ |
| parentOrganization | State Water Resources Control Board NERFINISHED ⓘ |
| partOf |
California Environmental Protection Agency
NERFINISHED
ⓘ
California Water Boards NERFINISHED ⓘ |
| regulates |
groundwater discharges
ⓘ
stormwater discharges ⓘ surface water discharges ⓘ wastewater discharges ⓘ water quality ⓘ |
| serviceArea |
Los Angeles County
NERFINISHED
ⓘ
Ventura County NERFINISHED ⓘ coastal waters of the Los Angeles region ⓘ |
| subjectTo | confirmation by the California State Senate ⓘ |
| website | https://www.waterboards.ca.gov/losangeles/ ⓘ |
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: Los Angeles Regional Water Quality Control Board Description of subject: 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.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
California State Water Resources Control Board
→
subdivision
→
Los Angeles Regional Water Quality Control Board
ⓘ
Santa Susana Field Laboratory
→
regulatingAgency
→
Los Angeles Regional Water Quality Control Board
ⓘ
Greater Los Angeles hydrologic system
→
regulatedBy
→
Los Angeles Regional Water Quality Control Board
ⓘ