Water Quality Standards Regulations: Delaware

Presented below 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.

On this page:

State Standards in Effect for CWA Purposes
Federally Proposed or Promulgated Standards

State Standards in Effect for CWA Purposes

[See State of Delaware Surface Water Quality Standards ]
(Effective December 11, 2017) State regulation establishing water quality standards for surface waters of the state.
[See Delaware River Basin Commission, Administrative Manual-Part III, Water Quality Regulations ]
(Effective July 8, 2014) This document is incorporated into Delaware’s water quality standards by reference.

Federally Proposed or Promulgated Standards

None at this time.

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State of Delaware Surface Water Quality Standards (PDF)(29 pp, 284 K)
Delaware River Basin Commission, Administrative Manual-Part III, Water Quality Regulations (PDF)(147 pp, 1 MB)