OAC Chapter 3745-1 Water Quality Standards 

The following is a complete list of the rules in Chapter 3745-1 of the Ohio Administrative Code.  A description of the contents of this chapter is available here. This description includes a link to tables summarizing the aquatic life and human health numerical water quality criteria and values contained in and developed pursuant to this chapter.

List of variances pursuant to paragraph (D)(12) of OAC 3745-33-07.

Download the entire Chapter 3745-1 here, or download individual rules below.

The Water Body Use Designation Index  is an alphabetical listing of the water bodies in rules 3745-1-08 to 3745-1-32 with their associated rule and page numbers.