Illinois Environmental Protection Agency
E313381
The Illinois Environmental Protection Agency is the state agency responsible for protecting Illinois’ air, land, and water resources through regulation, permitting, monitoring, and enforcement of environmental laws.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Illinois Environmental Protection Agency canonical | 34 |
| Illinois EPA | 2 |
| https://www2.illinois.gov/epa | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2958843 — 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: Illinois Environmental Protection Agency Context triple: [Illinois executive branch, includes, Illinois Environmental Protection Agency]
-
A.
Illinois Department of Natural Resources
The Illinois Department of Natural Resources is a state agency responsible for managing Illinois’s natural, recreational, and cultural resources, including state parks, historic sites, wildlife, and outdoor recreation programs.
-
B.
Illinois Department of Public Health
The Illinois Department of Public Health is the statewide government agency responsible for protecting public health in Illinois through disease prevention, health promotion, and regulation of health standards.
-
C.
Illinois Environmental Protection Act
The Illinois Environmental Protection Act is a key state law that establishes Illinois’s framework for protecting air, water, and land resources, regulating pollution, and empowering environmental enforcement agencies.
-
D.
Illinois Historic Preservation Division
The Illinois Historic Preservation Division is a state agency responsible for preserving, interpreting, and managing Illinois’ historic sites, buildings, and cultural resources.
-
E.
Government of Illinois
The Government of Illinois is the state’s governing authority, comprising executive, legislative, and judicial branches that administer laws and public policy within Illinois.
- 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: Illinois Environmental Protection Agency Target entity description: The Illinois Environmental Protection Agency is the state agency responsible for protecting Illinois’ air, land, and water resources through regulation, permitting, monitoring, and enforcement of environmental laws.
-
A.
Illinois Department of Natural Resources
The Illinois Department of Natural Resources is a state agency responsible for managing Illinois’s natural, recreational, and cultural resources, including state parks, historic sites, wildlife, and outdoor recreation programs.
-
B.
Illinois Department of Public Health
The Illinois Department of Public Health is the statewide government agency responsible for protecting public health in Illinois through disease prevention, health promotion, and regulation of health standards.
-
C.
Illinois Environmental Protection Act
The Illinois Environmental Protection Act is a key state law that establishes Illinois’s framework for protecting air, water, and land resources, regulating pollution, and empowering environmental enforcement agencies.
-
D.
Illinois Historic Preservation Division
The Illinois Historic Preservation Division is a state agency responsible for preserving, interpreting, and managing Illinois’ historic sites, buildings, and cultural resources.
-
E.
Government of Illinois
The Government of Illinois is the state’s governing authority, comprising executive, legislative, and judicial branches that administer laws and public policy within Illinois.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
government agency
ⓘ
state environmental protection agency ⓘ |
| abbreviation |
IEPA
ⓘ
Illinois EPA ⓘ
linked to:
Illinois Environmental Protection Agency
|
| country |
United States
ⓘ
linked to:
United States of America
|
| employerOf |
engineers
ⓘ
environmental inspectors ⓘ environmental scientists ⓘ regulatory attorneys ⓘ |
| fieldOfWork |
air emissions permitting
ⓘ
air quality regulation ⓘ brownfields remediation ⓘ drinking water protection ⓘ environmental compliance assistance ⓘ environmental education ⓘ environmental enforcement ⓘ environmental justice ⓘ environmental monitoring ⓘ environmental permitting ⓘ hazardous waste regulation ⓘ pollution control ⓘ site remediation ⓘ solid waste regulation ⓘ stormwater management ⓘ underground storage tank regulation ⓘ waste facility permitting ⓘ waste management regulation ⓘ wastewater regulation ⓘ water discharge permitting ⓘ water quality regulation ⓘ |
| hasPart |
Bureau of Administrative Services
ⓘ
Bureau of Air ⓘ Bureau of Environmental Compliance ⓘ Bureau of Environmental Safety ⓘ Bureau of Land ⓘ Bureau of Water ⓘ Office of Chemical Safety ⓘ Office of Community Relations ⓘ Office of Emergency Response ⓘ Office of Environmental Justice ⓘ Office of Pollution Prevention ⓘ |
| headquartersLocation | Springfield, Illinois ⓘ |
| industry | environmental protection ⓘ |
| jurisdiction |
Illinois
ⓘ
State of Illinois ⓘ
linked to:
Illinois
|
| languageOfWorkOrName | English ⓘ |
| locatedInTheAdministrativeTerritorialEntity | Sangamon County, Illinois ⓘ |
| parentOrganization |
Illinois state government
ⓘ
linked to:
Government of Illinois
|
| subdivisionOf |
State of Illinois government
ⓘ
linked to:
Government of Illinois
|
| website | https://www2.illinois.gov/epa ⓘ |
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: Illinois Environmental Protection Agency Description of subject: The Illinois Environmental Protection Agency is the state agency responsible for protecting Illinois’ air, land, and water resources through regulation, permitting, monitoring, and enforcement of environmental laws.
Referenced by (37)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Illinois Environmental Protection Agency
Office of Mines and Minerals – Oil and Gas Division
→
collaboratesWith
→
Illinois Environmental Protection Agency
ⓘ
subject linked to:
IEPA
linked to: Illinois Environmental Protection Agency
subject linked to:
IEPA
linked to: Illinois Environmental Protection Agency
Bureau of Environmental Compliance
→
parentOrganization
→
Illinois Environmental Protection Agency
ⓘ
subject linked to:
Office of Environmental Justice
Office of Environmental Justice (Illinois)
→
parentOrganization
→
Illinois Environmental Protection Agency
ⓘ
subject linked to:
Office of Environmental Justice