MAP's Assessment and Listing Process is driven by Vermont's State Water Quality Standards. In 2017, DEC completed a review and update of the Vermont Water Quality Standards. A triennial review of state water quality standards is required by the federal Clean Water Act. See Triennial Review below for more information.
Additonal information on water quality regulations and rules may be found at the Division's Laws, Regulations and Rule page.
2022 Triennial Review
Rulemaking Timeline
Proposed Water Quality Standards Rule and Supporting Documents
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EPA 2021 Revision to the 2016 Aquatic Life Ambient Water Quality Criterion for Selenium
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EPA 2018 Aquatic Life Ambient Water Quality Criteria for Aluminum
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Vermont Implementation Procedure for Use of the BLM for Copper
Pre-Rulemaking Stakeholder Outreach
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Summary of DEC's Proposed Changes to VWQS - April 2021
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VWQS Draft with Markup - April 2021
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Revised VWQS Draft with Markup - August 2021