Wisconsin Legislature: ATCP 76.11(6)

1. The flow through each skimmer shall be adjusted as often as necessary to maintain a vigorous skimming action at each skimmer. Pf

2. The pool water level shall be maintained at an elevation so that continuous effective surface skimming is accomplished through skimmers or over the gutter lip. Pf

a. For gutter pools, approximately 75 percent of the required recirculation flow shall be through the gutter and 25 percent through the main drain during normal operation. Pf

b. For pools with skimmers, approximately 80 percent of the recirculation flow shall be through skimmers and 20 percent through the main drain. Pf

c. For reverse flow pools, 100 percent of the required recirculation shall be through the gutter or skimmer. Pf

(b) Skimmers maintained.

1. Skimmers, skimmer weirs, and overflow gutters and drains shall be maintained so that they are clean.

2. Skimmers, skimmer weirs, and overflow gutters shall be repaired or replaced as needed.

3. Skimmer covers shall be securely seated on deck.

(c) Inlets. Inlets shall be checked and adjusted to ensure that the rate of flow through each inlet is such that a uniform distribution pattern is established. Inlets in pools with surface skimmers shall be directed as necessary to ensure that there is effective skimming in all areas. Pf

(d) Strainer baskets or screens.

1. Strainer baskets or screens shall be continuously in use and maintained.

2. Clean spare strainer baskets or screens shall be available.

3. Strainer baskets for skimmers and pump strainers shall be cleaned at least daily.

(3) Surge tanks. Surge tanks shall be operated within designed water levels.

(4) Pumps. Pump operation shall meet all of the following:

(a) Operational specification. The pump manufacturer’s maintenance and operating instructions shall be followed. Pf

(b) Continuous operation. Recirculation pumps shall continuously achieve the designed pool water recirculation rate except during maintenance operations. Pf

(d) Alternative pool type; turnover rate. If a pool is used as an alternate type of pool including a whirlpool used as a pool, the recirculation shall follow the stricter turnover time. Pf

- See PDF for table

s. ATCP 76.11 Table B Maximum Turnover Time for
Therapy and Exercise

- See PDF for table

(5) Flowmeters, valves, and gauges. Flowmeters, values, and gauges shall be all of the following:

(a) Maintained. Maintained in operating condition.

(b) Installed. Installed per manufacturer instructions or as verified by the pump curve. Pf

(5m) Piping. Piping shall comply with all of the following:

(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.

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

(6) Filters.

(a) General requirements.

1. The manufacturer’s data plate shall be visible on all filters.

2. Filter shells and appurtenances shall be maintained in operating condition. Pf

3. The backwash procedure shall follow the filter manufacturer’s written directions.

4. Backwash procedures shall be conspicuously posted in the filter area on an easily read chart.

5. Filter media shall be inspected annually and cleaned or replaced when necessary.

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

1. Rapid-rate sand filters. Pf

2. High-rate sand filters. Pf

3. Vacuum sand filters. Pf

1. Pressure and vacuum type diatomaceous earth filters shall be backwashed as recommended by the manufacturer. Pf

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

3. Diatomaceous earth wastewater separation tanks, where installed, shall be cleaned according to manufacturer instructions.Pf

4. Positive displacement feeder suction intake shall meet all of the following:

a. Suspended at least 6 inches above any sludge layer in the solution tank.P

b. In labeled tanks for mixing and distribution of slurry.

c. Mixing and distribution tanks shall be covered with a screened vent.

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

5. Diatomaceous earth slurry feeders shall meet all of the following:

a. The lowest effective concentration of solution shall be used in a diatomaceous earth slurry feeder.

b. The concentration of solution may not exceed 5 percent by weight. Pf

c. The diatomite slurry feeder head and lines shall be flushed as recommended by the manufacturer to assure proper and continuous operation. Pf

d. Water from the discharge side of the recirculation pump may be used.

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

f. Diatomite slurry tank agitators shall run continuously. Pf

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

1. Removed and cleaned as recommended by the manufacturer. Pf

2. Replaced when plugged or damaged. Pf

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

(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

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

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

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

(1) Labeling.

(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

1. Name of the product. Pf

2. Manufacturer’s name and address. Pf

3. Active ingredients. Pf

4. Directions for use. Pf

5. Hazardous ingredient warning. Pf

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

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

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

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

(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

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

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

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

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

(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

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

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

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

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

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

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