Water Quality Assessments and Reporting
Building on the routine monitoring of the state's waters, the bureau is responsible for the evaluation of monitoring results and the subsequent reporting on water quality. In addition to the bureau monitoring activities, these assessments also rely on all available sources of information: Regional Offices, other DEC Divisions, other local/state/federal agencies and public input.
The Waterbody Inventory/Priority Waterbodies List is a statewide inventory of all waterbodies in New York State that is used by the NYSDEC Division of Water to track the status of water quality in the state. For each waterbody, the WI/PWL characterizes available information on general water quality, the degree to which designated water uses (e.g., water supply, recreation, aquatic life support, etc.) are supported, and information on the identification of water quality problems, sources and restoration and protection efforts.
New York State Water Quality Report (Section 305(b) Report)
Section 305(b) of the Clean Water Act requires states to submit a report on the quality of the waters of their state every two years. This report is a compilation of water quality assessment information contained in the WI/PWL Basin Reports.
List of Impaired/TMDL Waters (Section 303(d) List)
Section 303(d) of the Clean Water Act requires states to compile and submit every two years a list of those waters that do not meet water quality standards and support uses, and that require the development of a Total Maximum Daily Load (TMDL) or other appropriate strategy to restore the water use.