Chapter ATCP 76

ATCP 76.11(5m)(a) (a) Identification. Water treatment system piping shall have permanent labels, numbered tags, or a color coding system that identifies valves, piping, and the direction of water flow.

ATCP 76.11(5m)(b) (b) Readable chart. Labels, tags, or color coding shall correspond to a conspicuously posted, easily read chart that explains the system.

ATCP 76.11(6) (6) Filters.

ATCP 76.11(6)(a) (a) General requirements.

ATCP 76.11(6)(a)1. 1. The manufacturer’s data plate shall be visible on all filters.

ATCP 76.11(6)(a)2. 2. Filter shells and appurtenances shall be maintained in operating condition. Pf

ATCP 76.11(6)(a)3. 3. The backwash procedure shall follow the filter manufacturer’s written directions.

ATCP 76.11(6)(a)4. 4. Backwash procedures shall be conspicuously posted in the filter area on an easily read chart.

ATCP 76.11(6)(a)5. 5. Filter media shall be inspected annually and cleaned or replaced when necessary.

ATCP 76.11(6)(b) (b) Sand filters. The following types of sand filters shall be backwashed as recommended by the manufacturer:

ATCP 76.11(6)(b)1. 1. Rapid-rate sand filters. Pf

ATCP 76.11(6)(b)2. 2. High-rate sand filters. Pf

ATCP 76.11(6)(b)3. 3. Vacuum sand filters. Pf

ATCP 76.11(6)(c) (c) Diatomaceous earth filters. Diatomaceous earth filters shall meet all of the following:

ATCP 76.11(6)(c)1. 1. Pressure and vacuum type diatomaceous earth filters shall be backwashed as recommended by the manufacturer. Pf

ATCP 76.11(6)(c)2. 2. Septum covers shall be removed, cleaned, or replaced when they no longer provide effective filtration or create a friction loss preventing maintenance of the required recirculation rate. Pf

ATCP 76.11(6)(c)3. 3. Diatomaceous earth wastewater separation tanks, where installed, shall be cleaned according to manufacturer instructions.Pf

ATCP 76.11(6)(c)4. 4. Positive displacement feeder suction intake shall meet all of the following:

ATCP 76.11(6)(c)4.a. a. Suspended at least 6 inches above any sludge layer in the solution tank.P

ATCP 76.11(6)(c)4.b. b. In labeled tanks for mixing and distribution of slurry.

ATCP 76.11(6)(c)4.c. c. Mixing and distribution tanks shall be covered with a screened vent.

ATCP 76.11(6)(c)4.d. d. Installed and maintained to prevent backflow of water into the tanks and to prevent the slurry from being siphoned out of the tanks into the pool recirculation system. P

ATCP 76.11(6)(c)5. 5. Diatomaceous earth slurry feeders shall meet all of the following:

ATCP 76.11(6)(c)5.a. a. The lowest effective concentration of solution shall be used in a diatomaceous earth slurry feeder.

ATCP 76.11(6)(c)5.b. b. The concentration of solution may not exceed 5 percent by weight. Pf

ATCP 76.11(6)(c)5.c. c. The diatomite slurry feeder head and lines shall be flushed as recommended by the manufacturer to assure proper and continuous operation. Pf

ATCP 76.11(6)(c)5.d. d. Water from the discharge side of the recirculation pump may be used.

ATCP 76.11(6)(c)5.e. e. If connection is to a potable water supply line, the supply line shall be equipped with an approved backflow or backsiphonage prevention device. P

ATCP 76.11(6)(c)5.f. f. Diatomite slurry tank agitators shall run continuously. Pf

ATCP 76.11(6)(d) (d) Cartridge filters. Cartridge filters shall meet all of the following:

ATCP 76.11(6)(d)1. 1. Removed and cleaned as recommended by the manufacturer. Pf

ATCP 76.11(6)(d)2. 2. Replaced when plugged or damaged. Pf

ATCP 76.11(6)(d)3. 3. A duplicate set of replacement cartridges shall be available on-site and used when removing a soiled cartridge from the filter for cleaning. Pf

ATCP 76.11(6)(e) (e) Activated filter media, filter ball media, and glass filter media. Activated filter media, filter ball media, and glass filter media shall be maintained and backwashed according to the manufacturer specifications. Pf

ATCP 76.11(6)(f) (f) Other media types. Other media types as approved by the department shall be maintained and backwashed according to the manufacturer specifications. Pf

ATCP 76.11 History History: CR 22-021: cr. Register June 2023 No. 810, eff. 9-24-23.

ATCP 76.12 ATCP 76.12 Labeling, storing, mixing, and handling chemicals, including gaseous chlorine. All labeling, storing, mixing, and handling of chemicals must be in compliance with applicable local, state, and federal regulations. Pf

ATCP 76.12(1) (1) Labeling.

ATCP 76.12(1)(a) (a) Chemical container. Except as provided in par. (b), all chemicals used in the operation and maintenance of pools, and bulk storage tanks containing the chemicals, shall be conspicuously labeled with all the following information: Pf

ATCP 76.12(1)(a)1. 1. Name of the product. Pf

ATCP 76.12(1)(a)2. 2. Manufacturer’s name and address. Pf

ATCP 76.12(1)(a)3. 3. Active ingredients. Pf

ATCP 76.12(1)(a)4. 4. Directions for use. Pf

ATCP 76.12(1)(a)5. 5. Hazardous ingredient warning. Pf

ATCP 76.12(1)(a)6. 6. For chemicals used for the primary purpose of controlling microbial or algal growth, the United States environmental protection agency registration number. Pf

ATCP 76.12(1)(b) (b) Erosion feeders. For chemicals used with erosion feeders, only the name of the chemical need be provided on the label. P

ATCP 76.12(2) (2) Chemical storage and chemical storage areas. Chemical storage and chemical storage areas shall meet all of the following:

ATCP 76.12(2)(a) (a) Original container. Chemicals shall be stored in the original or a properly labeled container. Pf

ATCP 76.12(2)(b) (b) Location. Chemicals shall be covered and kept in a clean, dry, well ventilated, and locked area away from flammables, incompatible chemicals, and heat sources. P

ATCP 76.12(2)(c) (c) Separation. Oxidizers shall be stored separately from acids.P

ATCP 76.12(2)(d) (d) Access. Only authorized personnel shall have access to a chemical storage area. P

ATCP 76.12(2)(e) (e) Chlorine gas. Chemicals shall not be stored in a chlorine gas storage area. P

ATCP 76.12(2)(f) (f) Food. Food may not be stored in a chemical storage area. Pf

ATCP 76.12(2)(g) (g) Smoking. Smoking is prohibited in a chemical storage area.P

ATCP 76.12(2)(h) (h) Ventilation. Ventilation in chemical storage areas shall comply pursuant to ch. SPS 364, as enforced by the Wisconsin department of safety and professional services. Pf

ATCP 76.12(2)(i) (i) Doors. Doors to chemical storage areas shall be locked and marked to indicate entry is for authorized personnel only. Pf

ATCP 76.12(2)(j) (j) Emergency telephone numbers. A list of emergency telephone numbers shall be in the chemical storage area or be readily accessible. Pf

ATCP 76.12 Note Note: For pools with liquid disinfectant and acid it is strongly encouraged to provide secondary containment in the chemical storage area.

ATCP 76.12(3) (3) Mixing of chemicals. The mixing of chemicals shall meet all of the following:

ATCP 76.12(3)(a) (a) Added to water. A chemical solution shall be added to water, not by adding water to the chemical. P

ATCP 76.12(3)(b) (b) Separately added. Each chemical or chemical solution shall be separately added to the water. P

ATCP 76.12(3)(c) (c) Restriction of patrons. Patrons shall not be in the pool when chemicals are added directly into the pool basin. P

ATCP 76.12(4) (4) Handling of chemicals.

ATCP 76.12(4)(a) (a) Smoking. Smoking by anyone handling chemicals or by anyone within the immediate vicinity of chemicals being mixed is prohibited. P

ATCP 76.12(4)(b) (b) Safety data sheet.

ATCP 76.12(4)(b)1. 1. For each chemical used, a safety data sheet shall be readily accessible to staff and the department or its agent. Pf

ATCP 76.12 Note Note: For example, the operator may keep the safety data sheet in a binder or on a computer as long as the operator or designated representative has immediate access to the information without leaving the pool area.

ATCP 76.12(4)(b)2. 2. A paper back-up of the safety data sheet shall be available for rapid access in the case of a power outage or other emergency.Pf

ATCP 76.12(4)(b)3. 3. Staff shall be trained in the use of the safety data sheet and where they are located. Pf

ATCP 76.12 History History: CR 22-021: cr. Register June 2023 No. 810, eff. 9-24-23.

ATCP 76.13 ATCP 76.13 Chemical feeders and filter aid equipment.

ATCP 76.13(1) (1) General. Chemical feeders and filter aid equipment shall be all of the following:

ATCP 76.13(1)(a) (a) Installed. Installed according to the manufacturer’s directions.

ATCP 76.13(1)(b) (b) Used. Chemical feeders shall only be used with the disinfectant or sanitizer recommended by the manufacturer and be all of the following: Pf

ATCP 76.13(1)(b)1. 1. Automatic. Pf

ATCP 76.13(1)(b)2. 2. Easily adjustable. Pf

ATCP 76.13(1)(b)3. 3. Capable of providing the required chemical residuals. Pf

ATCP 76.13(1)(c) (c) Interlocked. All recirculation systems shall be equipped with a chemical feed interlock pursuant to s. SPS 390.17 (2) (c) and (d), as enforced by the Wisconsin department of safety and professional services. P

ATCP 76.13(1)(c)1. 1. The interlock device shall meet all of the following requirements:

ATCP 76.13(1)(c)1.a. a. If power to the recirculation pump is interrupted, the chemical feed stops. Pf

ATCP 76.13(1)(c)1.b. b. Except as provided in subd. 5., if flow in the recirculation system is interrupted, the chemical feeds stops. Pf

ATCP 76.13(1)(c)2. 2. The operator or their designee shall demonstrate knowledge to the department or its agent on the pool’s interlock system in all the following areas:

ATCP 76.13(1)(c)2.a. a. Describes the location of chemical feed connections and system flow sensing interlocks in the recirculation system. P

ATCP 76.13(1)(c)2.b. b. Describes how the chemical feeder electrical interlock functions. P

ATCP 76.13(1)(c)2.c. c. Describes how the system flow sensing interlock functions, if applicable. P

ATCP 76.13(1)(c)2.d. d. Describes how monthly testing is performed. P

ATCP 76.13(1)(c)2.e. e. Describes what safety measures that must be employed during monthly testing. P

ATCP 76.13(1)(c)3. 3. Once monthly, challenge testing of the chemical feeder system shall be conducted to assess the interlock pursuant to subd. 1. P

ATCP 76.13(1)(c)4. 4. A log of the monthly test shall be kept and meet all of the following: