Croton Water Filtration Plant
E41735
The Croton Water Filtration Plant is a major underground water treatment facility in New York City that filters and improves drinking water drawn from the Croton water supply system.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Croton Water Filtration Plant canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T326521 — 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: Croton Water Filtration Plant Context triple: [Croton water supply system, hasTreatmentFacility, Croton Water Filtration Plant]
-
A.
Croton water supply system
The Croton water supply system is a historic network of reservoirs, aqueducts, and related infrastructure that delivers drinking water from New York’s Croton River watershed to New York City.
-
B.
New Croton Reservoir
The New Croton Reservoir is a major water supply reservoir in Westchester County, New York, that forms a key part of New York City's Croton water system.
-
C.
New Croton Dam
New Croton Dam is a large masonry gravity dam in New York that forms the New Croton Reservoir, a key component of New York City’s water supply system.
-
D.
Croton Point
Croton Point is a prominent peninsula on the east bank of the Hudson River in Westchester County, New York, known today for its large public park and scenic riverfront.
-
E.
Croton Falls Dam
Croton Falls Dam is a masonry gravity dam in Westchester County, New York, that forms the Croton Falls Reservoir as part of New York City’s water supply system.
- 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: Croton Water Filtration Plant Target entity description: The Croton Water Filtration Plant is a major underground water treatment facility in New York City that filters and improves drinking water drawn from the Croton water supply system.
-
A.
Croton water supply system
The Croton water supply system is a historic network of reservoirs, aqueducts, and related infrastructure that delivers drinking water from New York’s Croton River watershed to New York City.
-
B.
New Croton Reservoir
The New Croton Reservoir is a major water supply reservoir in Westchester County, New York, that forms a key part of New York City's Croton water system.
-
C.
New Croton Dam
New Croton Dam is a large masonry gravity dam in New York that forms the New Croton Reservoir, a key component of New York City’s water supply system.
-
D.
Croton Point
Croton Point is a prominent peninsula on the east bank of the Hudson River in Westchester County, New York, known today for its large public park and scenic riverfront.
-
E.
Croton Falls Dam
Croton Falls Dam is a masonry gravity dam in Westchester County, New York, that forms the Croton Falls Reservoir as part of New York City’s water supply system.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
underground facility
ⓘ
water treatment plant ⓘ |
| borough |
The Bronx
ⓘ
surface form:
Bronx
|
| connectsTo |
Jerome Park Reservoir
ⓘ
New Croton Aqueduct ⓘ |
| constructionCost | over 3000000000 USD ⓘ |
| constructionType | underground ⓘ |
| coordinates | approximately 40.897°N 73.886°W ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| designedCapacity |
290 million US gallons per day
ⓘ
about 1.1 billion liters per day ⓘ |
| inaugurationDate | 2015 ⓘ |
| locatedIn |
The Bronx
ⓘ
surface form:
Bronx
New York City ⓘ Van Cortlandt Park, Bronx ⓘ
surface form:
Van Cortlandt Park
|
| locatedInAdministrativeTerritory |
New York
ⓘ
surface form:
New York State
|
| locatedUnder | golf course in Van Cortlandt Park ⓘ |
| municipality | New York City ⓘ |
| notableFor |
being New York City’s first filtration plant for the Croton system
ⓘ
large-scale underground construction in an urban park ⓘ |
| officialOpeningDate | 2015-05-08 ⓘ |
| operatedBy | New York City Department of Environmental Protection ⓘ |
| ownedBy |
New York City
ⓘ
surface form:
City of New York
|
| partOf |
Croton water supply system
ⓘ
New York City water supply system ⓘ |
| projectFaced |
community opposition
ⓘ
construction delays ⓘ cost overruns ⓘ lawsuits ⓘ |
| purpose |
comply with federal drinking water regulations
ⓘ
improve water quality ⓘ treat drinking water for New York City ⓘ |
| regulatoryContext |
Filtration Avoidance Determination
ⓘ
Safe Drinking Water Act ⓘ Surface Water Treatment Rule ⓘ |
| serviceArea |
New York City distribution system
ⓘ
parts of Manhattan ⓘ parts of the Bronx ⓘ |
| startDateOfConstruction | 2004 ⓘ |
| usesProcess |
chlorination
ⓘ
corrosion control ⓘ disinfection ⓘ filtration ⓘ pH adjustment ⓘ ultraviolet disinfection ⓘ |
| waterSource |
Croton River
ⓘ
Croton Watershed ⓘ
surface form:
Croton watershed
New Croton Reservoir ⓘ |
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: Croton Water Filtration Plant Description of subject: The Croton Water Filtration Plant is a major underground water treatment facility in New York City that filters and improves drinking water drawn from the Croton water supply system.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.