NR 812.34(1)(c)1. 1. When a buried pressure tank, a pitless receiver tank or an above ground discharge unit is installed, the sampling faucet shall be installed immediately following the point of entry into the building or building basement.

NR 812.34(1)(c)2. 2. When an approved above ground discharge unit is used and the pressure tank is in the basement, the sampling faucet shall be installed in the service pipe from the tank at least 12 inches above the floor. The sampling faucet may be placed in the pump discharge line if there is no loss of air from the system when the faucet is opened.

NR 812.34(2) (2) An entry point sample faucet shall also be installed for a non-community water system after treatment or chemical addition, if any, but prior to the distribution system for sample collection and compliance with the monitoring requirements of ch. NR 809. The entry point sample faucet shall meet all the requirements specified in sub. (1) (b).

NR 812.34 History History: Cr. Register, January, 1991, No. 421, eff. 2-1-91; am. (intro.), (1), Register, September, 1994, No. 465, eff. 10-1-94; CR 13-099: am. (title), (intro.) Register September 2014 No. 705, eff. 10-1-14; CR 18-095: r. and recr. Register June 2020 No. 774, eff. 7-1-20; correction in (1) (c) 2. made under s. 35.17, Stats., Register June 2020 No. 774.

NR 812.35 NR 812.35 Yard hydrants. Yard hydrants may be installed in a water system provided they are not installed in or on a well and have been approved by the department of safety and professional services for this purpose. All backflow prevention devices shall comply with ch. SPS 384 and shall be installed and maintained in accordance with ch. SPS 382.

NR 812.35(1) (1) Yard hydrants having hose threaded outlets shall either:

NR 812.35(1)(a) (a) Have a hose connection vacuum breaker installed on the hose threads.

NR 812.35(1)(b) (b) Have a reduced pressure principle backflow preventer or a backflow preventer with intermediate atmospheric vent installed in the water supply pipe which serves only the yard hydrant or hydrants.

NR 812.35(2) (2) Yard hydrants without hose threaded outlets may be installed without additional backflow protection if the outlet of the yard hydrants complies with the air gap requirements in s. SPS 382.41.

NR 812.35 Note Note: Chapter SPS 384 requires that backflow prevention devices such as hose connection vacuum breakers, backflow preventers with intermediate atmospheric vent and reduced pressure principle backflow preventers must be reviewed by and receive device approval from department of safety and professional services. Chapter SPS 382 requirements do not allow backflow preventers to be buried or installed in a pit. Installation of hose connection vacuum breakers in areas subject to freezing must be of the type that allows draining. Department of safety and professional services plan approval must be received prior to the installation of a reduced pressure principle backflow preventer. Reduced pressure principle backflow preventers must be installed by a plumber licensed under ch. 145, Stats. and listed by department of safety and professional services to do such work. The device must be tested at least once a year by a department of safety and professional services listed backflow prevention device tester.

NR 812.35 Note Note: As the result of an incorrect transcription of the amendment of sub. (2) by CR 13-099, that provision incorrectly read “Yard hydrants having hose threaded outlets...” from 10-1-14 to 11-1-16.

NR 812.35 History History: Cr. Register, January, 1991, No. 421, eff. 2-1-91; correction in (intro.) made under s. 13.93 (2m) (b) 12., Stats., Register, September, No. 465; corrections made under s. 13.93 (2m) (b) 4., Stats., Register, September, 1996, No. 489; correction in (intro.) made under s. 13.93 (2m) (b) 7., Stats, Register, May, 2000, No. 533; correction in (intro.), (3) made under s. 13.92 (4) (b) 7., Stats., Register December 2011 No. 672; CR 13-099: am. (intro.), r. (1), renum. (2), (3) to (1), (2) and am. Register September 2014 No. 705, eff. 10-1-14; CR 13-099 transcription error in (2) corrected Register Otober 2016 No. 730; correction in (1) (a) made under s. 35.17, Stats., Register June 2020 No. 774.

NR 812.36 NR 812.36 Pits.

NR 812.36(1) (1) Approvals to construct pits. A pit structure that is completely or partially below the ground surface or below a building floor used for the housing of wells, off-set pumps, pressure tanks, or heads of pressure tanks may not be constructed without prior written approval from the department under s. NR 812.09. Pits used only for the housing of valves are exempt from the requirements of this section except that a pit used for this purpose shall be watertight, may not be connected to a sewer, shall be drained to permeable soil or to the ground surface and may not be subject to flooding.

NR 812.36(2) (2) Specification for new pits. Pits shall conform to Figure 8 of ch. NR 812 Appendix and all of the following minimum specifications:

NR 812.36(2)(a) (a) Dimensions.

NR 812.36(2)(a)1. 1. ‘Area.’ Five square feet of free floor area shall be provided for each square foot of area required for any pump installation equipment. The inside area of a pit may not be less than 24 square feet.

NR 812.36(2)(a)2. 2. ‘Width.’ The width of the pit shall be not less than 2/3 of the length.

NR 812.36(2)(a)3. 3. ‘Height.’ The height inside shall be at least 6 feet, but not less than 6 inches higher than any equipment installed in the pit.

NR 812.36(2)(a)4. 4. ‘Walls, floor and roof thicknesses.’ The wall thickness shall be at least 6 inches and waterproof. The floor thickness shall be at least 4 inches when the floor bears on a footing. Floors used as a wall footing shall be at least 6 inches thick from the outside edge of the floor to a point at least one foot inside the wall of the pit. The roof thickness shall be at least 5 inches.

NR 812.36(2)(b) (b) Construction.

NR 812.36(2)(b)1. 1. ‘Material.’ The pit shall be constructed of reinforced poured concrete thoroughly puddled in place. The concrete shall be prepared to meet the requirements specified in s. NR 812.11 (15) (e) or by using clear water and washed sand and gravel or crushed rock in the following proportions: 1 part cement, 2 parts sand, and 3 parts gravel. The water-cement ratio may not exceed 6 gallons of water per 94 pounds of cement. A 6-bag concrete mix per cubic yard with a 28-day design strength of at least 3,000 lbs. per foot and a slump test of no more than 3 inches may be used.

NR 812.36(2)(b)2. 2. ‘Watertight juncture.’ The junction of walls, floor and roof shall be made watertight by use of water stops or keyed joints. Conduits or similar connection with the pit shall be watertight.

NR 812.36(2)(b)3. 3. ‘Reinforcement.’ The deck or pit roof and walls of the pit structure shall be reinforced with bars or wire mesh to insure strength and durability.

NR 812.36(2)(b)4. 4. ‘Elevation of pit roof.’ The pit roof, deck or wall top shall be above the ground surface.

NR 812.36(2)(c) (c) Manhole opening.

NR 812.36(2)(c)1. 1. ‘Placement.’ The pit shall be provided with a manhole opening. The opening shall be located directly over the well, unless the well casing pipe itself extends through the roof, or if a capped section of well casing pipe at least equal in diameter to the well casing pipe is cast into the pit roof directly over the well.

NR 812.36(2)(c)2. 2. ‘Size.’ The manhole opening shall be at least 20 inches square or 20 inches in diameter and shall be sufficiently large to allow entrance or removal of any unit or equipment to be installed in the pit.

NR 812.36(2)(c)3. 3. ‘Curbing.’ The manhole opening shall be provided with a raised concrete curbing at least 4 inches thick. The curbing shall extend at least 4 inches above the pit roof.