NR 812.32(2)(b)(b) Pump height. The pump impeller or cylinder for off-set pumps shall be located at an elevation at least one foot above the basement, pit, or alcove floor. NR 812.32(3)(3) Pump intake setting. When a well is constructed in an unconsolidated formation, the pump intake shall be set at least 5 feet above the bottom of the well casing pipe or drive pipe casing or above the top of the screen. When a pump is replaced and set to a greater depth in a well, an attempt shall be made to ascertain the well construction so this requirement can be made. The pump shall provide an adequate quantity of water, where obtainable, for the intended purpose of the well. NR 812.32 NoteNote: The department may grant variances to the 5-foot requirement of this subsection in low permeability, low yielding formations.
NR 812.32(4)(4) Buried discharge lines from submersible pumps. NR 812.32(4)(a)(a) Pressure requirements. Buried discharge lines from submersible pumps shall meet the requirements of s. NR 812.28 and shall be maintained under system pressure at all times. Check valves may not be placed in the pump discharge pipe beyond a buried section of pipe between a well and a pressure tank. The check valves shall be located at the top of the submersible pump, or in that portion of the discharge pipe before it becomes buried, or on the spool of an approved spool-type pitless unit. NR 812.32(4)(b)1.1. When a water discharge line crosses a sanitary sewer, the water discharge line piping within 10 feet of the point of crossing shall be installed: NR 812.32(4)(b)1.a.a. At an elevation at least 12 inches above the top of the sewer measured from the bottom of the water line; or NR 812.32(4)(b)1.b.b. At least 18 inches below the bottom of the sewer measured from the top of the water line; or NR 812.32(4)(b)2.2. When a water discharge line extends parallel or roughly parallel with a sewer, the water discharge line shall be separated a minimum distance from the sewer as follows: NR 812.32(4)(b)2.a.a. Water discharge lines 2 1/2 inches in diameter and larger shall be separated at least 8 feet horizontally from a sanitary sewer, measured from center to center of the 2 pipes. NR 812.32(4)(b)2.b.b. Except as provided in subd. 2. c., water discharge lines 2 inches or smaller in diameter shall be separated at least 30 inches horizontally from a sanitary sewer, measured from center to center of the 2 pipes. NR 812.32(4)(b)2.c.c. Water discharge lines 2 inches in diameter and smaller may be installed less than 30 inches horizontally separated from a sanitary sewer if the bottom of the water discharge line is installed at least 12 inches above the sewer, except that portion of the water discharge line within 5 feet of the point where the line enters the building may be less than 12 inches above the sewer. NR 812.32(4)(b)2.d.d. A water discharge line shall be separated from a storm sewer by at least 6 inches. NR 812.32(4)(c)(c) Back-flow and back-siphonage prevention. When a well is installed with a submersible pump and an above ground discharge, it shall contain an UL approved check valve and an air-vacuum relief valve prior to any buried portion of the discharge pipe. When water is pumped to a pond or other body of water, the end of the pump discharge pipe shall be terminated at least 2 feet above the highest elevation of the water in the pond or other body of water. NR 812.32(4)(d)1.1. A water discharge line may not be installed in, under or above sanitary sewer manholes, or under a POWTS treatment, holding or dispersal component, including a septic or holding tank, or any in-ground, at-grade, or mound soil absorption unit. NR 812.32(4)(d)2.2. A water discharge line shall be separated at least 10 feet horizontally from a POWTS treatment, holding or dispersal component, including but not limited to a septic or holding tank, or any in-ground, at-grade, or mound soil absorption unit. NR 812.32(5)(a)(a) Shallow-well suction pumps, deep-well piston pumps and deep-well jet pumps. When the pump unit does not effectively seal the top of the well casing pipe and the well pump suction pipe or jet pump piping emerges from the top, a threaded fitting, or an approved type seal with expandable rubber or neoprene gasket shall be provided between the well casing pipe and the well pump suction pipe or jet pump piping. NR 812.32(5)(b)1.1. ‘General sealing requirements.’ Lineshaft turbine pumps shall be mounted on the well or over the well casing pipe on a pump platform or well casing pipe flange so as to effectively seal the top of the well. Any opening through the pump discharge head shall be sealed watertight. NR 812.32(5)(b)2.2. ‘Specific sealing requirements.’ The discharge head for a lineshaft turbine pump may be installed over the well casing pipe under the following conditions: NR 812.32(5)(b)2.a.a. A minimum 12 inch high concrete pump platform shall be poured surrounding the well casing pipe. The well casing pipe shall project at least one inch up into the pump discharge head. NR 812.32(5)(b)2.b.b. If the pump discharge head does not have enough recess to extend down over the well casing pipe at least one inch, a cast iron or steel subbase sanitary ring at least one inch thick shall be bolted to the base of the discharge head and installed surrounding the well casing pipe. A compressible neoprene gasket shall be installed between the base of the discharge head and the sanitary ring or subbase unless the metal surfaces are machined. As an alternative a flange may be welded to the top of the well casing pipe. NR 812.32(5)(b)2.c.c. If a concrete pump platform is not to be poured surrounding the well casing pipe, a steel flange shall be welded watertight to the top of the well casing pipe. The base of the discharge head shall be bolted to the casing flange and a compressible neoprene gasket shall be installed between the 2. NR 812.32(5)(b)2.d.d. The well casing pipe may be enlarged above grade to accommodate the pump column flange, by fillet welding or threading a steel flange plate watertight to the top of the well casing pipe. A piece of larger diameter pipe meeting Table B requirements shall then be fillet welded watertight to the top of the flange plate. The pump discharge head shall then be installed as provided in subd. 2. a. to c.