R 325.2156 Disinfectants and other chemicals.

Rule 56. (1) A chemical manufacturer shall provide evidence to the department that a chemical or other additive for disinfecting or otherwise treating swimming pool water meets all of the following requirements: (a) Does not create objectionable physiological effects to bathers. (b) Does not impart toxic or other deleterious properties to bathers or to the water. (c) Is compatible in the water with other chemicals and processes normally used in swimming pool water treatment. (d) Is safely and simply handled and closely controlled in its usage. (e) Is measured by readily applied poolside tests to determine its concentration, residual, or effectiveness. (2) The department may authorize the use of a disinfectant if the owner applies the disinfectant in a concentration that is appropriate, practical, and safe under normal pool conditions and if the disinfectant has been demonstrated, to the department, to be as effective in disinfection as both of the following: (a) A free available chlorine residual of 1.0 milligram per liter at a pH of 7.2. (b) A solution that has an oxidation-reduction potential equivalent to 650 millivolts or more as measured with a silver-silver chloride electrode. (3) A swimming pool owner shall apply the disinfectant at a suitable point in the recirculation system for effective disinfection of the recirculating water.