NR 812.33(2)(b)1.b.b. An exposed overflow pipe shall be located just under the roof of the reservoir or outside the elevated storage tank and shall extend at least 8 feet away. The overflow pipe shall terminate with a downturned, screened elbow located at least 12 inches above ground grade. The pipe shall discharge onto a splash plate and have sufficient diameter to permit wasting water at a rate in excess of the inflow from the water source.

NR 812.33(2)(b)2.2. ‘Steel construction specifications.’ Steel reservoirs or elevated storage tanks shall meet the requirements of AWWA D100-84 for welded construction or AWWA D103-80 for bolted construction.

NR 812.33(2)(b)4.c.c. The floor of the reservoir shall be reinforced poured concrete with a thickness of at least 6 inches and shall have a curbing wall 6 inches high and 6 inches thick having a keyway or a flexible water stop strip for a construction joint with the walls.

NR 812.33(2)(b)4.e.e. The roof shall be reinforced poured concrete at least 6 inches thick and shall extend at least 12 inches above established ground grade. An access manhole at least 20 inches in diameter or 20 inches square shall be constructed as an integral part of the roof. The manhole shall have a curbing wall extending at least 12 inches above the roof. The department recommends that the manhole shall be constructed entirely of 4-inch thick reinforced poured concrete, but may be fabricated of 1/4-inch steel or cast iron frame with a gasket and bolted cover. The curbing shall be provided with a snug fitting, overlapping cover with a minimum of 3-inch wide skirted sides. The department recommends that the cover be constructed with welded sheet steel, but may be constructed with reinforced poured concrete. Concrete shall be mixed according to the requirements specified in s. NR 812.11 (15) (e).

NR 812.33(2)(b)5.5. ‘Location requirements.’ A reservoir shall be located according to the requirements of s. NR 812.08, including the minimum separation distance requirements of s. NR 812.08 (4) established for existing or proposed potential sources of contamination.

NR 812.33(3)(3) Painting and cathodic protection. Metal surfaces of reservoirs or elevated storage tanks, to be in contact with potable water, shall be protected by paints, other protective coatings, or by cathodic protection except when documentation is provided to the department that the source water will not be aggressive or corrosive to the metal surfaces. Paint or coating systems shall conform with AWWA standard D102 and shall be NSF approved for use with potable water. When cathodic protection is to be provided, it shall be designed and installed by competent technical personnel. A copy of the AWWA standards are available for inspection at the office of the department of natural resources and the office of the legislative reference bureau, and may be obtained for personal use from AWWA, Inc., 6666 W. Quincy Avenue, Denver, Colorado 80235.

NR 812.33 HistoryHistory: Cr. Register, January, 1991, No. 421, eff. 2-1-91; am. (1) (a) (title), 1., (b), (2) (b) 1. a., Register, September, 1994, No. 465, eff. 10-1-94; am. (1) (a) (intro.), 1., Register, September, 1996, No. 489, eff. 10-1-96; correction in (3) under s. 13.92 (4) (b) 6., Stats., Register July 2010 No. 655; CR 13-099: am. (1) (a) 1., cr. (1) (a) 2. d., am. (1) (b), (2) (intro.), cr. (2) (b) 5., am. (3), r. and recr. Figures 36b., 36c. Register September 2014 No. 705, eff. 10-1-14; CR 18-095: am. (1) (b), (2) (intro.), (b) (intro.), 4. e. Register June 2020 No. 774, eff. 7-1-20; (2) (b) 5. (title) created under s. 13.92 (4) (b) 2., Stats., Register June 2020 No. 774; correction in (3) made under s. 13.92 (4) (b) 6., Stats., Register April 2023 No. 808.

NR 812.34(1)(b)(b) The sample faucet shall be installed at least 12 inches above the floor, have a downturned spout, and be in an accessible location. All sample faucets shall be metal and shall have an inside diameter of at least 1/4 inch. The sample faucet shall have a smooth end. Threaded faucets and threaded drain valves may not be installed in place of a smooth end sample faucet even if the threads have been filed off. Petcocks may not be used as sample faucets. Any faucet used for recirculation shall be installed with a hose connection vacuum breaker.

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 HistoryHistory: 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 812.35NR 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)(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 NoteNote: 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 NoteNote: 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.