Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content

Contaminant Candidate List 1

Metadata Updated: March 16, 2024

CCL 1 is a list of contaminants that are currently not subject to any proposed or promulgated national primary drinking water regulations, that are known or anticipated to occur in public water systems, and which may require regulation under the Safe Drinking Water Act (SDWA). The list includes, among others, pesticides, disinfection byproducts, chemicals used in commerce, waterborne pathogens, pharmaceuticals, and biological toxins. The Agency considered the best available data and information on health effects and occurrence to evaluate thousands of unregulated contaminants.

Access & Use Information

Public: This dataset is intended for public access and use. License: See this page for license information.

Downloads & Resources

No file downloads have been provided. The publisher may provide downloads in the future or they may be available from their other links.

References

https://edg.epa.gov/metadata/rest/document?id=%7BC74548B9-0661-4B3D-8980-BF0E9C72C81F%7D
https://edg.epa.gov/metadata/catalog/search/resource/details.page?uuid=%7BC74548B9-0661-4B3D-8980-BF0E9C72C81F%7D

Dates

Metadata Created Date November 29, 2020
Metadata Updated Date March 16, 2024
Data Update Frequency irregular

Metadata Source

Harvested from OW Non-Geo Records

Additional Metadata

Resource Type Dataset
Metadata Created Date November 29, 2020
Metadata Updated Date March 16, 2024
Publisher U.S. EPA Office of Water (OW) - Office of Ground Water and Drinking Water (OGWDW)
Maintainer
Identifier {C74548B9-0661-4B3D-8980-BF0E9C72C81F}
Data First Published 2014-01-01
Data Last Modified 1998-03-02
Public Access Level public
Data Update Frequency irregular
Bureau Code 020:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://edg.epa.gov/data/public/OW/metadata/OW.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id c59a88a8-4fd1-4c6b-9124-fe6cf79f3c97
Harvest Source Id 8ed177f0-2564-4659-9197-8b64a5f0db3d
Harvest Source Title OW Non-Geo Records
License https://edg.epa.gov/EPA_Data_License.html
Old Spatial -180.0,18.0,-66.0,72.0
Program Code 020:072
Related Documents https://edg.epa.gov/metadata/rest/document?id=%7BC74548B9-0661-4B3D-8980-BF0E9C72C81F%7D, https://edg.epa.gov/metadata/catalog/search/resource/details.page?uuid=%7BC74548B9-0661-4B3D-8980-BF0E9C72C81F%7D
Source Datajson Identifier True
Source Hash d321686aa06f8cbcbe5ab7be80ff631531b5d170838eec6264caaa402d8214a6
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -180.0, 18.0, -180.0, 72.0, -66.0, 72.0, -66.0, 18.0, -180.0, 18.0}

Didn't find what you're looking for? Suggest a dataset here.