Drinking Water Maximum Contaminant Levels (MCLs)

National Primary Drinking Water Regulations (NPDWRs or primary standards) are legally enforceable standards that apply to public water systems. Primary standards protect public health by limiting the levels of contaminants in drinking water.

Data and Resources

This dataset has no data

Field Value
__category_tag_16e15f51-d96e-4051-9124-75665abdc6ff ["Human Health"]
accessLevel public
accrualPeriodicity irregular
bureauCode {020:00}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_@id https://edg.epa.gov/metadata/RestQueryServlet?f=dcat&searchText=metadataFormat:(iso)&owner=13&max=350
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier {801C993D-B195-4B7A-97B6-17B299ED1E95}
issued 2014-01-01
license https://edg.epa.gov/EPA_Data_License.html
modified 2009-05-01
old-spatial -180.0,18.0,-66.0,72.0
programCode {020:072}
publisher U.S. EPA Office of Water (OW) - Office of Ground Water and Drinking Water (OGWDW)
references {https://edg.epa.gov/metadata/catalog/search/resource/details.page?uuid=%7B801C993D-B195-4B7A-97B6-17B299ED1E95%7D,https://edg.epa.gov/metadata/rest/document?id=%7B801C993D-B195-4B7A-97B6-17B299ED1E95%7D}
resource-type Dataset
source_datajson_identifier true
source_hash 14e03d635537aed09e2b0fb7b96e42815be5041b
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]]]}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • ckan
  • contaminants
  • drinking-water
  • environment
  • geo
  • geoss
  • health
  • human-health
  • mcl
  • national
  • north-america
  • pollution
  • public-water-systems
  • sdwa
  • united-states
isopen False
license_id other-license-specified
license_title other-license-specified
maintainer Karen Wirth, U.S. EPA Office of Water (OW) - Office of Ground Water and Drinking Water (OGWDW)
maintainer_email wirth.karen@epa.gov
metadata_created 2025-11-21T21:35:07.449472
metadata_modified 2025-11-21T21:35:07.449477
notes National Primary Drinking Water Regulations (NPDWRs or primary standards) are legally enforceable standards that apply to public water systems. Primary standards protect public health by limiting the levels of contaminants in drinking water.
num_resources 0
num_tags 17
title Drinking Water Maximum Contaminant Levels (MCLs)