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Water Quality attainment Information from Clean Water Act Statewide Statistical Surveys

Published by U.S. EPA Office of Water (OW) - Office of Wetlands Oceans and Watersheds (OWOW) | U.S. Environmental Protection Agency | Catalog Last Checked: August 01, 2026 at 03:30 AM | Dataset Last Updated: October 01, 2014
Designated uses assessed by statewide statistical surveys and their state and national attainment categories. Statewide statistical surveys are water quality assessments designed to yield unbiased estimates of the condition of a whole resource (such as all lakes or streams in a state) based on monitoring a representative sample of those waters.

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