National Recommended Water Quality Criteria

Published by U.S. EPA Office of Water (OW) | U.S. Environmental Protection Agency | Metadata Last Checked: July 12, 2025 | Last Modified: 2014-01-01

The National Recommended Water Quality Criteria is a compilation of national recommended water quality criteria for the protection of aquatic life and human health in surface water for approximately 150 pollutants. These criteria provide guidance for states and tribes to use in adopting water quality standards.

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Complete Metadata

bureauCode	[ "020:00" ]
dataQuality	false
identifier	{EC131FBC-B7D8-4AAD-A061-E9060FD25E50}
issued	2014-01-01
landingPage	https://edg.epa.gov/metadata/catalog/search/resource/details.page?uuid=%7BEC131FBC-B7D8-4AAD-A061-E9060FD25E50%7D
programCode	[ "020:072" ]
references	[ "https://edg.epa.gov/metadata/catalog/search/resource/details.page?uuid=%7BEC131FBC-B7D8-4AAD-A061-E9060FD25E50%7D", "https://edg.epa.gov/metadata/rest/document?id=%7BEC131FBC-B7D8-4AAD-A061-E9060FD25E50%7D", "https://www.epa.gov/wqc/national-recommended-water-quality-criteria-tables" ]
spatial	-180.0,18.0,-66.0,72.0

Location