Skip to main content
Back To Top Top Back To Top
This website publishes administrative rules on their effective dates, as designated by the adopting state agencies, colleges, and universities.

Rule 3745-1-04 | Criteria applicable to all waters.


[Comment: For dates of non-regulatory government publications, publications of recognized organizations and associations, federal rules and federal statutory provisions referenced in this rule, see rule 3745-1-03 of the Administrative Code.]

The following general water quality criteria apply to all surface waters of the state including mixing zones. To every extent practical and possible as determined by the director, these waters shall be as follows:

(A) Free from suspended solids or other substances that enter the waters as a result of human activity and that will settle to form putrescent or otherwise objectionable sludge deposits, or that will adversely affect aquatic life.

(B) Free from floating debris, oil, scum and other floating materials entering the waters as a result of human activity in amounts sufficient to be unsightly or cause degradation.

(C) Free from materials entering the waters as a result of human activity producing color, odor or other conditions in such a degree as to create a nuisance.

(D) Free from substances entering the waters as a result of human activity in concentrations that are toxic or harmful to human, animal or aquatic life or are rapidly lethal in the mixing zone.

(E) Free from nutrients entering the waters as a result of human activity in concentrations that create nuisance growths of aquatic weeds and algae.

(F) Free from public health nuisances associated with raw or poorly treated sewage reaching surface waters of the state. A public heath nuisance exists when the conditions set forth in paragraph (F)(1) of this rule are demonstrated.

(1) An inspection conducted by, or under the supervision of, Ohio EPA or a sanitarian registered under Chapter 4736. of the Revised Code documents both of the following:

(a) Odor, color or other visual manifestations of raw or poorly treated sewage.

(b) Water samples exceed one thousand thirty E. coli counts per one hundred milliliters in two or more samples when five or fewer samples are collected, or in more than twenty per cent of the samples when more than five samples are taken.

(2) Paragraph (F)(1) of this rule may be used by the appropriate authorities to document the existence of unsanitary conditions as described in section 6117.34 of the Revised Code, but does not preclude the use of other evidence of unsanitary conditions for the purposes described in section 6117.34 of the Revised Code.

(G) For the purposes of applying paragraph (F) of this rule the water samples shall be collected as follows:

(1) When flow is representative of steady state dry weather conditions, i.e., base flow or delayed flow.

(2) At least two hours apart.

(3) Over a time period not to exceed thirty days.

(H) Nothing in paragraph (F) or (G) of this rule limits or otherwise changes the applicability of paragraphs (A) to (E) of this rule.

Last updated March 20, 2024 at 8:38 AM

Supplemental Information

Authorized By: 6111.041
Amplifies: 6111.041
Five Year Review Date: 3/6/2028
Prior Effective Dates: 2/14/1978, 4/4/1985, 10/15/1998, 1/2/2018