Washington Water Quality Standards | Region 10 | US EPA

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Washington Water Quality Standards

Recent Actions

  • On May 23, 2007, EPA Region 10 approved Washington's revisions to the marine chronic aquatic life cyanide criterion for waters outside of Puget Sound. Approval Letter and technical basis (PDF) (4 pp, 183K)
  • On January 12, 2005, EPA formally approved several de minimis elements of Ecology's July 2003 water quality standard (WQS) revisions. The approved sections include those where only nonsubstantive formatting changes were made: the bacteria criteria and recreational uses, and sections that point directly to the code of federal regulations. EPA has also indicated they are not taking action on certain sections of the rule because the language is not considered a water quality standard. The letter to the department of Ecology from EPA describing the partial approval can be viewed at the following link: http://www.ecy.wa.gov/programs/wq/swqs/wqstandards-epaltr.pdf.
EPA Correspondence

Related Information


    Washington Department of Ecology
    Cheryl Niemi (cheryl.niemi@ecy.wa.gov)
    P.O. Box 47600
    Olympia, WA 98504

    Fax: 360-407-6426

    EPA, Region 10
    Matthew Szelag (szelag.matthew@epa.gov)
    1200 Sixth Ave, Suite 900
    Seattle, WA 98101
    Fax: 206-553-0165

Local Navigation

URL: https://yosemite.epa.gov/R10/WATER.NSF/Water+Quality+Standards/WA+WQS

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