R 325.2194 Water quality standards.

Rule 94. (1) A swimming pool owner shall maintain a suitable free available residual of the disinfectant throughout the swimming pool water. (2) A swimming pool owner shall test the water before and during each period of swimming pool use, at a frequency of at least once per day, to assure the maintenance of pH and disinfectant residuals as established by table 3 of this rule. (3) A swimming pool owner shall ensure that the minimum free available disinfectant residual maintained, in milligrams per liter, satisfies the specifications of table 3 of this rule. (4) Table 3 reads as follows: Table 3 Disinfectant Residuals (Milligrams per liter) Disinfectant pH 7.2 to 7.5 More than 7.5 to 8.0 Bromine 2.0 2.0 Chlorine 1.0 2.0 Chlorinated cyanurate* 2.0 4.0 *At 20 to 40 parts per million (ppm) cyanuric acid (cya). For higher levels of cya, add 0.5 mg/l for each additional 20 ppm cya, or fraction of 20 ppm above 40 ppm. (5) The minimum disinfectant residual maintained with a different disinfectant shall be that which is as effective as provided in R 325.2156. (6) When a cyanurate is used, a swimming pool owner shall ensure that the cyanuric acid level of the swimming pool water is not more than 80 milligrams per liter and is tested at least once each week and more frequently if necessary. (7) A swimming pool owner shall ensure that the water temperature of a swimming pool is not more than 104 degrees Fahrenheit. (8) A swimming pool owner shall prominently display at the pool, a caution sign, acceptable to the department, stating the maximum operating water temperature, other pertinent health warnings, and warning against the use of the pool by young children when the normal water temperature is more than 86 degrees Fahrenheit. (9) A swimming pool owner shall ensure that a swimming pool is used only when the water is sufficiently clear to readily discern either of the following from the edge of the pool: (a) The entire bottom of the pool. (b) The main outlet grating from a horizontal distance up to 30 feet. (10) If a swimming pool becomes polluted with feces, vomit, sewage, or other material, then the owner shall immediately close the pool from use and take actions to mitigate the pollution and restore water quality. The owner or operator may reopen the pool according to the contingency plan adopted by the owner under R 325.2194a and available for review by the department or local health department, if there is no approved contingency plan, then the owner shall obtain approval to reopen the pool from the department or local health department. (11) A swimming pool owner shall promptly remove visible dirt on the bottom of a swimming pool or floating on the water surface. (12) A spa pool owner shall drain, clean, sanitize, and refill a spa pool at a frequency acceptable to the department or local health department as necessary to maintain sanitary conditions.