Section ATCP 76.18 - Water testing frequency(1) ALL POOLS, EXCEPT WHIRLPOOLS, THERAPY, AND EXCERCISE POOLS. (a)pH and disinfectant or sanitizer. Except as provided under sub. (3), water shall be tested for pH and disinfectant or sanitizer residual at the following times: 1. Daily before the pool is open to the public or before the pool is in use. Pf2. At least one other time during the day's peak patron load. Pf(b)Combined chlorine. If chlorine is used, the water shall also be tested at least twice a week for the combined chlorine level. Pf(c)Alkalinity. Water shall also be tested at least once a week for total alkalinity. Pf(d)Cyanuric acid. If cyanuric acid is used in the water basin, the cyanuric acid concentration in the water shall be tested at least once a week. Pf(2) WHIRPOOL, THERAPY, AND EXERCISE POOLS. (a)pH and disinfectant or sanitizer. Except as provided under sub. (3), water shall be tested for pH and disinfectant or sanitizer residual at the following times: 1. Before the pool is open to the public or before the pool is in use and at least 4 times daily. Pf2. Two of the tests shall be during the day's peak patron load. Pf(b)Combined chlorine. When chlorine is used, the water shall be tested at least once daily for the combined chlorine level. Pf(c)Alkalinity. Water shall be tested at least once a week for total alkalinity. Pf(d)Cyanuric acid. When cyanuric acid is used in the water basin, the cyanuric acid concentration in the water shall be tested at least once a week. Pf(3) ELECTRONIC MONITORING DEVICE. For a properly maintained electronic monitoring device installed to control pH and disinfectant or sanitizer, the operator shall: (a)Frequency. Manually tested the pool at least once a day for pH and disinfectant or sanitizer residual with an approved test kit pursuant to s. ATCP 76.17 Table A. Pf(b)Maintenance. Periodically monitor the device to determine if it meets operating criteria pursuant to s. ATCP 76.14 (5). Pf(4) INCREASED TESTING. The department or its agent may require more frequent testing if the testing logs are not maintained and the operator demonstrates a lack of active managerial control. PfWis. Admin. Code Department of Agriculture, Trade and Consumer Protection ATCP 76.18
Renumbered from DHS 172.18 Register June 2016 No. 726; correction in (3) made under s. 13.92(4) (b) 7, Stats., Register June 2016 No. 726, eff. 7/1/2016Adopted by, CR 22-021: cr. Register June 2023 No. 810, eff. 9/24/2023This section is created eff. 9-24-23 by CR 22-021.