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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 | Metadata Last Checked: July 12, 2025 | Last Modified: 2014-10-01
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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