Antidegradation refers to federal regulations designed to maintain and protect high quality waters and existing water quality in other waters from unnecessary pollution.

• Introduction to Antidegradation,(*.pdf file)
• Antidegradation - EPC Meeting january 15, 2008 (*.pdf file)
• Draft Antidegradation Policy, Antidegradation Policy Rules (*.pdf file)
• Draft Antidegradation Implementation Procedures, Iowa Antidegradation Implementation Procedure (*.pdf file)

Lori McDaniel, Supervisor
Water Quality Bureau, Iowa Department of Natural Resources
502 E 9th St., Des Moines, IA 50319
Phone: (515)281-8094; Fax: (515)281-8895
E-mail Address: lori.mcdaniel@dnr.iowa.gov