NSDWRs
E942124
NSDWRs are U.S. Environmental Protection Agency guidelines that recommend limits for non-health-related contaminants in public drinking water systems, such as those affecting taste, odor, or appearance.
All labels observed (1)
| Label | Occurrences |
|---|---|
| NSDWRs canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11730426 — 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: NSDWRs Context triple: [National Secondary Drinking Water Regulations, abbreviation, NSDWRs]
-
A.
NSD
NSD is the abbreviated name for Russia’s National Settlement Depository, the country’s central securities depository and key financial market infrastructure institution.
-
B.
DWR
DWR is the California state agency responsible for managing and protecting the state’s water resources and infrastructure.
-
C.
NSRDEC
NSRDEC is a U.S. Army research and development center focused on advancing soldier systems, including clothing, equipment, food, and protective technologies to enhance warfighter performance and survivability.
-
D.
NWR
NWR is the U.S. nationwide network of NOAA-operated radio stations that continuously broadcast weather forecasts, warnings, and emergency information.
-
E.
NSR
NSR is the abbreviation commonly used for the North Staffordshire Railway, a historic British railway company that operated in the Staffordshire region of England.
- 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: NSDWRs Target entity description: NSDWRs are U.S. Environmental Protection Agency guidelines that recommend limits for non-health-related contaminants in public drinking water systems, such as those affecting taste, odor, or appearance.
-
A.
NSD
NSD is the abbreviated name for Russia’s National Settlement Depository, the country’s central securities depository and key financial market infrastructure institution.
-
B.
DWR
DWR is the California state agency responsible for managing and protecting the state’s water resources and infrastructure.
-
C.
NSRDEC
NSRDEC is a U.S. Army research and development center focused on advancing soldier systems, including clothing, equipment, food, and protective technologies to enhance warfighter performance and survivability.
-
D.
NWR
NWR is the U.S. nationwide network of NOAA-operated radio stations that continuously broadcast weather forecasts, warnings, and emergency information.
-
E.
NSR
NSR is the abbreviation commonly used for the North Staffordshire Railway, a historic British railway company that operated in the Staffordshire region of England.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
U.S. Environmental Protection Agency guideline
ⓘ
United States federal drinking water guideline ⓘ |
| abbreviationOf | National Secondary Drinking Water Regulations ⓘ |
| appliesTo |
public drinking water systems
ⓘ
public water systems ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| covers |
contaminants that cause color problems in drinking water
ⓘ
contaminants that cause odor problems in drinking water ⓘ contaminants that cause scaling or deposits in water systems ⓘ contaminants that cause staining of teeth or laundry ⓘ contaminants that cause taste problems in drinking water ⓘ |
| distinguishedFrom | National Primary Drinking Water Regulations ⓘ |
| enforceability |
may be adopted as enforceable by states
ⓘ
not federally enforceable ⓘ |
| exampleContaminant |
aluminum
ⓘ
chloride ⓘ copper ⓘ fluoride (cosmetic effects such as tooth discoloration) ⓘ iron ⓘ manganese ⓘ silver ⓘ sulfate ⓘ total dissolved solids ⓘ zinc ⓘ |
| focus |
aesthetic effects of drinking water contaminants
ⓘ
appearance of drinking water ⓘ cosmetic effects of drinking water contaminants ⓘ non-health-related drinking water contaminants ⓘ odor of drinking water ⓘ taste of drinking water ⓘ |
| fullName | National Secondary Drinking Water Regulations ⓘ |
| goal |
to improve consumer acceptance of drinking water
ⓘ
to minimize nuisance problems caused by drinking water contaminants ⓘ |
| issuedBy |
Office of Water of the U.S. Environmental Protection Agency
ⓘ
linked to:
EPA Office of Water
|
| legalStatus |
non-enforceable guideline
ⓘ
secondary standard ⓘ |
| measurementBasis | concentration of specific contaminants in drinking water ⓘ |
| partOf | United States drinking water regulations framework ⓘ |
| purpose |
to protect public welfare related to drinking water quality
ⓘ
to provide guidelines for contaminants that affect the aesthetic quality of drinking water ⓘ to recommend limits for non-health-related contaminants in drinking water ⓘ |
| regulatingAgency |
EPA
ⓘ
United States Environmental Protection Agency ⓘ |
| regulatoryDomain | drinking water quality ⓘ |
| relatedTo | Safe Drinking Water Act ⓘ |
| scope | public water systems in the United States ⓘ |
| standardType | guidance level for secondary contaminants ⓘ |
| typeOfStandard | secondary drinking water standard ⓘ |
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: NSDWRs Description of subject: NSDWRs are U.S. Environmental Protection Agency guidelines that recommend limits for non-health-related contaminants in public drinking water systems, such as those affecting taste, odor, or appearance.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.