Section 325.2102. Sanitation and safety determinations.

(1) Bacterial concentrations in water at a bathing beach, as determined by standard methods, shall contain not more than 130 Escherichia coli (E. coli) per 100 milliliters,  as  a 30-day geometric

mean. Compliance shall be based on the geometric mean of all individual samples taken during 5 or more sampling events representatively spread over a 30-day period. Each sampling event shall consist of 3 or more samples taken at representative locations within a designated sampling area. Bathing beach waters shall not contain more than a maximum of 300 E. coli per 100 milliliters. Compliance shall be based on the geometric   mean of  3  or  more   samples  taken   during  the  same  sampling  event at representative locations within a defined sampling area.

(2)   Chemical determinations shall follow standard methods and shall show that the water is free of chemical substances capable of creating toxic reactions or irritations to the skin or membranes of a bather or swimmer.

(3)   Physical determinations shall show the water to be free of all of the following:

(a)  Turbidity.

(b)   Color.

(c)   ) Deposits.

(d)  Growths.

(e)   Oils.

(f)  Greases.

(g)   Any other substances in the water capable of creating a health or safety hazard or a nuisance to a bather or swimmer.

History: 1979 AC; 1995 AACS.