Impaired 2012 River Lake Estuary Set

Connecticut 303(d) Impaired Waters 2012 is a subset of Connecticut 305(b) Assessed Waters 2012. If any one of the assigned designated uses is categorized as NOT Supporting, the assessed waterbody is included in this subset and is considered impaired. Additional information about Integrated Water Quality reporting is available on the CT DEEP website, Integrated Water Quality Report page. Connecticut 305(b) Assessed Waters files includes rivers, lakes and estuaries that have been assessed in compliance with Sections 305(b) and 303(d) of the federal Clean Water Act. Section 305(b) of the Clean Water Act requires each state to monitor, assess and report on the quality of its waters relative to attainment of designated uses established by the State's water quality standards. Section 303(d) requires each State to compile a subset of that list identifying only those waters not meeting water quality standards and assign a Total Maximum Daily Load (TMDL) priority ranking to each impaired waterbody. This assessment is based on information collected and compiled prior to 2012. It represents conditions at a particular point in time and does not represent current conditions. Depending on the type of waterbody - river, lake, or estuary - this information geographically displays attainment and non-attainment (e.g. full supporting, not supporting, not assessed) for each designated use - aquatic life, marine aquatic life, recreation use, fish consumption, shellfish harvesting, and drinking water supply.2012年康涅狄格州《清洁水法》（Clean Water Act）第303(d)款受损水体数据集，系2012年康涅狄格州《清洁水法》第305(b)款评估水体数据集的子集。若任意一项指定用途被归类为“未达标支持”，则对应的评估水体将被纳入该子集，并被认定为受损水体。有关综合水质报告（Integrated Water Quality reporting）的更多信息，可访问康涅狄格州能源与环境保护部（CT DEEP）官网的综合水质报告页面获取。2012年康涅狄格州《清洁水法》第305(b)款评估水体数据集涵盖依据联邦《清洁水法》第305(b)款和第303(d)款完成评估的河流、湖泊与河口。《清洁水法》第305(b)款要求各州针对其水体是否达到本州水质标准设定的指定用途要求，开展监测、评估并提交相关报告。《清洁水法》第303(d)款则要求各州从上述评估清单中筛选出未达水质标准的水体子集，并为每一处受损水体分配日最大负荷总量（Total Maximum Daily Load, TMDL）优先级排名。本次评估基于2012年之前收集并整理的信息，仅反映特定时间点的水体状况，并非当前实际情况。根据水体类型（河流、湖泊或河口）的不同，该数据集将以地理可视化形式展示各类指定用途——包括水生生物保护、海洋水生生物保护、娱乐用水、鱼类消费、贝类捕捞以及饮用水供应——的达标与未达标情况（例如“完全达标支持”“未达标支持”“未评估”）。