This checklist includes all materials which should be completed and submitted to EPA Region 8 when a Wyoming or Tribal Public Water System using Surface Water or GWUDISW (a Subpart H System) is making a change to treatment or building a new treatment plant.
You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.- Surface Water / GWUDISW Change Form (PDF)(8 pp, 183 K, 12/03/2019)