National Secondary Drinking Water Regulations
E278882
The National Secondary Drinking Water Regulations are U.S. EPA guidelines that set non-enforceable standards for drinking water quality related to aesthetic factors such as taste, odor, and appearance.
All labels observed (2)
| Label | Occurrences |
|---|---|
| National Secondary Drinking Water Regulations canonical | 4 |
| EPA National Secondary Drinking Water Regulations | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2575158 — 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: National Secondary Drinking Water Regulations Context triple: [National Primary Drinking Water Regulations, relatedTo, National Secondary Drinking Water Regulations]
-
A.
National Primary Drinking Water Regulations
The National Primary Drinking Water Regulations are U.S. federal standards that set legally enforceable limits on contaminants in public drinking water systems to protect human health.
-
B.
Surface Water Treatment Rule
The Surface Water Treatment Rule is a U.S. Environmental Protection Agency regulation that sets standards and treatment requirements to protect public health from pathogens in drinking water drawn from surface sources such as rivers, lakes, and reservoirs.
-
C.
Drinking Water Standards and Health Advisories
Drinking Water Standards and Health Advisories is a U.S. EPA reference document that provides health-based guidance and regulatory benchmarks for contaminants in drinking water to help protect public health.
-
D.
Safe Drinking Water Act
The Safe Drinking Water Act is a U.S. federal law that protects public health by regulating the nation’s public drinking water supply and setting standards for water quality.
-
E.
National Pollutant Discharge Elimination System
The National Pollutant Discharge Elimination System is a U.S. regulatory permitting program that controls water pollution by regulating point-source discharges of pollutants into waters of the United States.
- 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: National Secondary Drinking Water Regulations Target entity description: The National Secondary Drinking Water Regulations are U.S. EPA guidelines that set non-enforceable standards for drinking water quality related to aesthetic factors such as taste, odor, and appearance.
-
A.
National Primary Drinking Water Regulations
The National Primary Drinking Water Regulations are U.S. federal standards that set legally enforceable limits on contaminants in public drinking water systems to protect human health.
-
B.
Surface Water Treatment Rule
The Surface Water Treatment Rule is a U.S. Environmental Protection Agency regulation that sets standards and treatment requirements to protect public health from pathogens in drinking water drawn from surface sources such as rivers, lakes, and reservoirs.
-
C.
Drinking Water Standards and Health Advisories
Drinking Water Standards and Health Advisories is a U.S. EPA reference document that provides health-based guidance and regulatory benchmarks for contaminants in drinking water to help protect public health.
-
D.
Safe Drinking Water Act
The Safe Drinking Water Act is a U.S. federal law that protects public health by regulating the nation’s public drinking water supply and setting standards for water quality.
-
E.
National Pollutant Discharge Elimination System
The National Pollutant Discharge Elimination System is a U.S. regulatory permitting program that controls water pollution by regulating point-source discharges of pollutants into waters of the United States.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
United States federal guideline
ⓘ
drinking water quality guideline ⓘ environmental regulation guideline ⓘ |
| abbreviation |
NSDWRs
ⓘ
SMCLs ⓘ |
| administeredUnder | Safe Drinking Water Act ⓘ |
| allow | states to adopt them as enforceable standards ⓘ |
| alsoKnownAs | secondary drinking water standards ⓘ |
| applyTo | public water systems ⓘ |
| are |
guidance for water suppliers
ⓘ
not federally enforceable limits ⓘ |
| areDistinctFrom | National Primary Drinking Water Regulations ⓘ |
| concern |
appearance of drinking water
ⓘ
color of drinking water ⓘ corrosivity of water ⓘ odor of drinking water ⓘ staining potential of water ⓘ taste of drinking water ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| doNotAddress | health-based primary contaminants ⓘ |
| encourage | water systems to monitor aesthetic contaminants ⓘ |
| firstIssuedBy | United States Environmental Protection Agency ⓘ |
| focus |
aesthetic effects of drinking water
ⓘ
cosmetic effects of drinking water ⓘ |
| goal |
to improve consumer acceptance of drinking water
ⓘ
to reduce aesthetic issues such as staining of laundry and plumbing fixtures ⓘ to reduce cosmetic issues such as tooth discoloration ⓘ |
| includeParameter |
chloride
ⓘ
color ⓘ corrosivity ⓘ fluoride (cosmetic effects) ⓘ foaming agents ⓘ iron ⓘ manganese ⓘ odor ⓘ pH ⓘ silver ⓘ sulfate ⓘ total dissolved solids ⓘ zinc ⓘ |
| intendedFor |
public health officials
ⓘ
state drinking water regulators ⓘ water system operators ⓘ |
| legalStatus | non-enforceable ⓘ |
| purpose | to provide guidelines for public water systems on aesthetic aspects of drinking water quality ⓘ |
| regulatingAgency | United States Environmental Protection Agency ⓘ |
| relatedTo | Safe Drinking Water Act ⓘ |
| typeOfStandard | secondary maximum contaminant level ⓘ |
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: National Secondary Drinking Water Regulations Description of subject: The National Secondary Drinking Water Regulations are U.S. EPA guidelines that set non-enforceable standards for drinking water quality related to aesthetic factors such as taste, odor, and appearance.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
National Primary Drinking Water Regulations
→
relatedTo
→
National Secondary Drinking Water Regulations
ⓘ
National Primary Drinking Water Regulations
→
distinguishedFrom
→
National Secondary Drinking Water Regulations
ⓘ
linked to: National Secondary Drinking Water Regulations