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Service Description: This service is in mature support as of December 2022. Please replace this service with Surface Water Quality Classifications from CT DEEP. https://services1.arcgis.com/FjPcSmEFuDYlIdKC/ArcGIS/rest/services/Surface_Water_Quality_Classifications/FeatureServer
Map Name: Water Quality Classifications
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Document Info:
Title: Water Quality Classifications
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Comments: The Surface Water Quality Classifications and the Ground Water Quality Classifications are usually presented together as a depiction of water quality classifications in Connecticut. Water Quality Classifications, based on the adopted Water Quality Standards, establish designated uses for surface and ground waters and identify the criteria necessary to support those uses. Surface Water Quality and Ground Water Quality Classifications are 1:24,000-scale data.
Surface Water Quality Classifications is a line and a polygon feature-based layer that includes water quality classification information for surface waters for all areas of the State of Connecticut. This edition of the Surface Water Quality Classifications is based on the Water Quality Standards adopted on February 25, 2011. The Surface Water Quality Classes are AA, A, B, SA and SB. All surface waters not otherwise classified are considered as Class A if they are in Class GA Ground Water Quality Classifications areas. Class AA designated uses are: existing or proposed drinking water, fish and wildlife habitat, recreational use (maybe restricted), agricultural and industrial supply. Class A designated uses are: potential drinking water, fish and wildlife habitat, recreational use, agricultural and industrial supply. Class B designated uses are: fish and wildlife habitat, recreational use, agricultural and industrial supply and other legitimate uses including navigation. Class B* surface water is a subset of Class B waters and is identical in all ways to the designated uses, criteria and standards for Class B waters except for the restriction on direct discharges. Coastal water and marine classifications are SA and SB. Class SA designated uses are: marine fish, shellfish and wildlife habitat, shellfish harvesting for direct human consumption, recreation and other legitimate uses including navigation. Class SB designated uses are: marine fish, shellfish and wildlife habitat, shellfish harvesting for transfer to approved areas for purification prior to human consumption, recreation and other legitimate uses including navigation. The Ground Water Quality Classes are GA, GAA, GAAs, GB and GC. Classes GAA and GA designate areas of existing or potential drinking water. All ground waters not otherwise classified are considered as Class GA. Class GAAs is for ground water that is tributary to a public water supply reservoir. Class GB is used where ground water is not suitable for drinking water. Class GC is used for assimilation of permitted discharges. Modified classes GA-Impaired, GAA-Impaired, GAA-Well-Impaired, GAA-Well and GA-NY are found in the data layer to categorize special cases of GA or GAA that may not be meeting the goal (impaired), surround public water supply wells (Well) or contribute to a public water supply watershed for another state (NY).
Subject: The Water Quality Classifications based on adopted standards establish designated uses for waters and identify the criteria necessary to support those uses.
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Keywords: Water,Surface,Ground,Quality,Connecticut,Deprecated,Mature Support
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