Water Quality Standards Regulations: Nevada

Presented are water quality standards in effect for Clean Water Act (CWA) purposes for this state.

EPA is posting these standards as a convenience to users and has made a reasonable effort to assure their accuracy. For each document listed under "State Standards in Effect for CWA Purposes", EPA has made a reasonable effort to identify parts of the standards that are disapproved or are otherwise not in effect for CWA purposes. Additionally, please note the documents may also contain provisions that EPA does not have the authority and duty to act on under the Clean Water Act because the provisions are not water quality standards.

• What is a New or Revised Water Quality Standard Under CWA 303(c)(3)? - Frequently Asked Questions (pdf) (108.04 KB)

• State Standards in Effect for CWA Purposes
• Federally Proposed or Promulgated Standards

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State Standards in Effect for CWA Purposes

• Water Quality Regulations (pdf) (383.81 MB)
  (Effective December 19, 2023) State regulation establishing water quality regulations for waters in Nevada.
• Requirements to Maintain Existing Higher Quality for Area of Lake Mead (pdf) (878.72 KB)

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Federally Proposed or Promulgated Standards

• 40 CFR §131.36  Toxics criteria for those states not complying with Clean Water Act section 303(c)(2)(B)