Triennial Review

Nevada Triennial Review of Surface Water Quality Standards

The Nevada Division of Environmental Protection (NDEP) holds public meetings every three years to review and update the state's surface water quality standards. This process, mandated by the Federal Water Pollution Control Act and 40 CFR 131.20, involves a formal public comment period where citizens can provide input. After considering public feedback, the NDEP Bureau of Water Quality Planning (BWQP) and the State Environmental Commission work together to adopt selected standards, ensuring they align with state and federal laws, public interest, and the best available science.

Note: This review does not apply to drinking water or groundwater standards.

2024 Triennial Review- BWQP opened the comment period for the most recent Triennial Review on November 16, 2024 through January 17, 2025. A public meeting was held virtually and in-person on December 16, 2024, at 2 pm. 

For more details about the triennail review process see documents below:

• NDEP Triennial Review Fact Sheet
• Workshop Notice 
• 2024 Triennial Review Public Meeting Slide Presentation

Contact Seth Alm at (775) 687-9457 or ndep-sam [at] ndep.nv.gov with questions or comments.

2021 Triennial Review — BWQP opened the comment period October 16, 2021 – December 17, 2021.  The public hearing was held virtually from Carson City on November 16, 2021.  Documents below are in Adobe PDF File Format

• NDEP Triennial Review Fact Sheet
• Workshop Notice
• Triennial Review Slide Show (November 16, 2021)
• NDEP Response to comments
• NDEP Letter to EPA
• Rationale to not adopt Aluminum criteria
• Rationale to not adopt Biotic Ligand Model for Copper