Water Quality Classification MapsWater Quality Classifications Resource Guide The Water Quality Classification Maps are an element of the Connecticut Water Quality Standards and show the class assigned to each surface water and ground water resource throughout the state. The Water Quality Classification Maps have been adopted and are amended from time to time pursuant to the statutory process described in section 22a-426 of the Connecticut General Statutes. The maps are used to relate designated uses and the applicable Standards and Criteria for each class of surface and ground water resource to a specific location. GIS Shapefiles of the Water Quality Classifications (Ground Water Quality Classifications Polygon, Surface Water Quality Classification Line or Surface Water Quality Classification Polygon) are available for download on the GIS Data web page.
Current Water Quality Classification by Municipality
Content last updated on July 13, 2021