Water Quality Standards Regulations: New York
Presented are water quality standards in effect for Clean Water Act (CWA) purposes for this state.
EPA is posting these standards as a convenience to users and has made a reasonable effort to assure their accuracy. Also, for each document listed under "State Standards in Effect for CWA Purposes", EPA has made a reasonable effort to identify parts of the standards that are disapproved or are otherwise not in effect for CWA purposes.
State Standards in Effect for CWA Purposes
Section 1: Water Quality Regulation (pdf)
(Effective March 7, 2018) Surface Water and Ground Water Classifications and Standards.
Note: These regulations contain additional provisions related to groundwater that are outside the scope of the Clean Water Act and the implementing federal regulations, but are included here as supplementary information. Please note that not all provisions are effective for Clean Water Act purposes (see cover page for more information).
Section 2: Division of Water Technical and Operational Guidance (1.1.1) (pdf)
This document provides a compilation of ambient water quality guidance values and groundwater effluent limitations for use where there are no standards or regulatory effluent limitations.
Section 3: Division of Water Technical and Operational Guidance (1.1.3) (pdf)
This document provides the technical reference for the calculation of a site-specific standard or guidance value for the protection of aquatic life.
Section 4: Division of Water Technical and Operation Guidance (1.1.4) (pdf)
This document provides detailed procedures for the derivation of Bioaccumulation Factors.
Section 5: Division of Water Technical and Operation Guidance (1.1.5) (pdf)
This document provides detailed procedures for deriving ambient water quality standards and guidance values for the protection of wildlife.
Section 6: Division of Water Technical and Operation Guidance (1.3.1) (pdf)
New York State Provisions for Mixing Zones.
Section 7: Division of Water Technical and Operation Guidance (1.3.9) (pdf)
This document provides supplementary guidance associated with the implementation of the NYSDEC 1985 Antidegradation Policy.
Section 8: Amendment to the National Pollutant Discharge Elimination System (pdf)
This MOA ensures that variances granted under 6NYCRR Part 702.17 are consistent and as protective as those which would be issued under the Great Lakes Water Quality Guidance.
Section 9: Water Quality Antidegradation Policy (pdf)
This document presents the policy by which the Department of Environmental Conservation (DEC) protects water quality against degradation.
- New York State Water Classifications 6NYCRR Parts 800-941
The classifications of all water body segments in New York State are contained in 6NYCRR Parts 800-941. These classifications are descriptive designations assigned under state regulations to all waters in the State, defining the best way each body of water can be used. The classification is the legal basis for water quality protection programs.
Effective dates for these classifications (for Clean Water Act purposes) are documented in EPA review of New York State Water Classifications 6NYCRR Parts 800-941 (pdf)
Federally Proposed or Promulgated Standards
The document suggests how states and authorized tribes can conduct online public hearings in lieu of in-person public hearings, consistent with federal public hearing requirements.