ATCP 76.14(5)(e)2.e. e. A record shall be maintained documenting combined chlorine test results, date and times breakpoint chlorination was performed, and any complaints of eye or respiratory irritation.

ATCP 76.14(5)(f) (f) Maximum chlorine residual. The maximum chlorine residual in any pool may not exceed 10 ppm. P

ATCP 76.14(5)(g) (g) Maximum total bromine. The maximum total bromine in a pool may not exceed 10 ppm. P

s. ATCP 76.14 Table A
Minimum disinfectant or sanitizer residuals
in parts per million (ppm)

- See PDF for table

ATCP 76.14(6) (6) Electronic monitoring devices.

ATCP 76.14(6)(a) (a) Water potential. When oxidation potential controllers are used the water potential shall be kept between 650-900 mV. In addition to the requirements pursuant to s. ATCP 76.18 (3), if the water potential reads below 650 mV or above 900 mV, the operator shall manually test the pool water with an approved test kit. Pf

ATCP 76.14(6)(b) (b) Free chlorine, or bromine. For a pool equipped with an approved and properly maintained electronic monitoring device to control the disinfectant or sanitizer level and pH, the available disinfectant or sanitizer residual shall meet the minimum requirements pursuant to s. ATCP 76.14 Table A, and be tested pursuant to s. ATCP 76.18 (3). Pf

ATCP 76.14 History History: CR 22-021: cr. Register June 2023 No. 810, eff. 9-24-23.

ATCP 76.15 ATCP 76.15 Alternative or supplemental disinfection systems. Any one of the following alternative or supplemental systems may be added to a pool if an automated disinfection system is in place and on line to maintain the disinfectant or sanitizer residuals pursuant to s. ATCP 76.14 Table A. Pf

ATCP 76.15(1) (1) Chlorine generators.

ATCP 76.15(1)(a) (a) NSF 50. Chlorine generators, including salt systems, shall be certified and installed to NSF 50 and manufacturer instructions. Pf

ATCP 76.15(1)(b) (b) Disinfectant system on line. An additional disinfection system shall remain on line and able to automatically provide the capacity to superchlorinate the water and maintain the required sanitizer residual. P

ATCP 76.15(2) (2) Ozone generators.

ATCP 76.15(2)(a) (a) Maximum concentration. Ozone generators shall provide a concentration of ozone in the return line to the pool not to exceed 0.1 mg/L. P

ATCP 76.15(2)(b) (b) Electrically interlocked. The ozone generator shall be electrically interlocked with the recirculation pump to prevent the feeding of ozone when the recirculation pump is not operating. A flow sensor controller may also be used to turn off the feeder when flow is interrupted. P

ATCP 76.15(2)(c) (c) Maximum ambient ozone level. Off-gassing of ozone may not result in ozone levels in the equipment room or pool area exceeding 0.1 ppm. P

ATCP 76.15(3) (3) Ultraviolet light. Ultraviolet light units shall be certified to NSF 50, and tested and approved for use in water disinfection systems and installed pursuant to NSF 50 requirements. P

ATCP 76.15(4) (4) Other technologies. Other technologies that inactivate or kill pathogens shall be certified and installed pursuant to NSF 50, manufacturer instructions, and have an EPA registration number, if applicable. P

ATCP 76.15 History History: CR 22-021: cr. Register June 2023 No. 810, eff. 9-24-23.

ATCP 76.16 ATCP 76.16 Water quality.

ATCP 76.16(1) (1) General requirement. Pool water shall be free of chemical, physical, and microbial substances known to be, or suspected of being, capable of creating toxic reactions or skin or membrane irritations. P

ATCP 76.16(2) (2) Water clarity. Pool water shall be transparent and free from cloudiness. The main drain grating shall be readily visible from the pool deck, including the outline of the main drain and the main drain cover pattern. P

ATCP 76.16(3) (3) Water sampling.

ATCP 76.16(3)(a) (a) Sample collection and analysis. The department or its agent may collect samples of pool water for microbiological analysis in evaluating water quality. The analysis of water samples shall be performed by a laboratory accredited by the department. These monitoring activities may be supplemented with additional microbiological analysis, which shall be performed by an accredited laboratory certified in those methods.Pf

ATCP 76.16 Note Note: A list of accredited laboratories may be obtained by calling the department at [phone] or by email at www.datcp.state.wi.us.

ATCP 76.16(3)(b) (b) Bacteriological standards. Water quality shall be maintained to meet the following standards:

ATCP 76.16(3)(b)1. 1. When bacteriological analysis of total coliforms, Staphylococcus aureus, Pseudomonas aeruginosa or Legionella pneumophila is performed, no detectable levels are present in a 100 milliliter sample. P Any approved method for each analyte may be reported as either colony forming units or most probable number.

ATCP 76.16(3)(b)2. 2. When bacteriological analysis is performed for the heterotrophic plate count, the total count may not exceed 200 colony forming units per milliliter (CFU/mL) in a 100 milliliter sample.Pf