NR 812.32(2)(a)1.1. Buried suction pipes shall be enclosed in a pressurized conduit and the annular space between the 2 pipes shall be maintained under system water pressure at all times provided by a pipe extending from the pump watertight to the conduit. NR 812.32 NoteNote: In areas especially prone to lightning strikes to wells having submersible pumps, the department will grant variances to the prohibition against nonpressurized conduits.
NR 812.32(2)(a)2.2. When a suction pipe crosses a sewer, the suction pipe shall be laid according to the sewer separation requirements of s. NR 812.32 (4). NR 812.32 NoteNote: A well casing pipe nipple, 1/2 threaded-1/2 beveled may be used in lieu of a full pipe coupling.
NR 812.32(2)(a)3.3. Pressurized conduits may terminate at the end of a horizontal pipe entering a basement. Any unburied pump suction pipe in the basement not enclosed in a pressurized conduit shall be at least one foot above the basement floor. A pressure or box elbow may be used to extend the pressurized conduit to a point above the basement floor. Pressure or box elbows may be buried. NR 812.32(2)(a)4.4. A shallow well pump shall discharge to a seal-cross fitting before being connected to a pressure tank. A control valve may not be installed in the discharge pipe between the pump and the seal-cross fitting. 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.