NR 811.25(2)(b)(b) Openings in floors, roofs or wherever needed for removal of heavy or bulky equipment. For well pumphouses, a secured roof hatch shall be located over the well.

NR 811.25(3)(3) Stairways and ladders. Stairways or ladders shall be provided between all floors and in pits or compartments which are to be entered.

NR 811.25(4)(4) Heating. Adequate heating shall be provided for the safe and efficient operation of the equipment.

NR 811.25 NoteNote: In buildings not occupied by personnel, only enough heat need be provided to prevent freezing, unless higher temperatures are required for proper chemical addition or to allow water treatment and control equipment to function properly.

NR 811.25(5)(5) Ventilation. Ventilation for all pumping stations, pumphouses, and water treatment plant buildings is governed by applicable building codes.

NR 811.25(6)(6) Dehumidification. A means for dehumidification shall be provided in pump rooms and in other water system related buildings where excess moisture could cause or is causing safety hazards or damage to equipment or piping.

NR 811.25(7)(7) Lighting. All pumping stations, pumphouses, and water treatment plant buildings shall be provided with adequate interior and exterior lighting. The design of exterior lighting should promote security.

NR 811.25(8)(8) Sanitary and other conveniences. All pumping stations, pumphouses, and water treatment plants shall be provided with potable water, lavatory, and toilet facilities except for unoccupied automatic stations or if such facilities are available elsewhere. All plumbing including fixtures, backflow protection, floor drains, hub drains, piping and their installation, testing, and maintenance shall conform to the requirements of chs. SPS 302, 305 and 381 to 384.

NR 811.25(9)(9) Multipurpose buildings. Water supply buildings may be enclosed in or attached to buildings that serve multiple purposes such as a park building, garage, office, storage or restroom facility if the purposes for which the building are used are compatible with the protection of the water supply. In all cases the water supply facilities shall be separated by walls from the other building uses with access to the water supply facilities gained by separate locked doors and restricted to authorized water system personnel. The specific requirements for multipurpose buildings shall comply with subs. (1) to (8) where applicable.

NR 811.25 HistoryHistory: CR 09-073: cr. Register November 2010 No. 659, eff. 12-1-10; correction in (1) (h) 2. c., 4., (8) made under s. 13.92 (4) (b) 6., 7., Stats., Register December 2011 No. 672; CR 22-074: cr. (1) (h) 2. bm. Register January 2024 No. 817, eff. 2-1-24.

NR 811.26(1)(1) There shall be 2 or more pumping units, with each unit capable of supplying the peak demand. The department may approve exceptions under sub. (2), if additional pumping stations which can meet the peak demand are available or if the department determines that there will be a sufficient volume of storage available between pumping periods to allow for necessary repairs. Depending on the type and size of the water system, a sufficient volume of storage may include elevated storage, ground storage fitted with high-lift pumps and auxiliary power, and pressure tank storage. If only 2 units are provided, each unit shall be capable of supplying the peak demand. If more than 2 units are installed, the total number of units shall have sufficient capacity so that if any one pump is taken out of service, the remaining pumps are capable of supplying the peak demand.

NR 811.26(2)(2) If no elevated storage is available and more than 50 living units are to be served, there shall be 2 or more wells or pumping units, each of which is capable of supplying the peak demand. An approved interconnection with another water system or a ground storage reservoir with high-lift pumps may be used in lieu of this requirement for other-than-municipal water systems.

NR 811.26(3)(3) Have controls for proper alternation when 2 or more pumps are installed.

NR 811.27NR 811.27 Auxiliary power. All municipal pumping stations, pumphouses, and water treatment plants shall have a standby auxiliary power source unless the department determines that there is sufficient pumping capacity with existing auxiliary power located at other water system facilities to provide at least an average day supply of water. Sufficient power shall be provided to operate pumps, treatment systems, chemical addition, control systems, and monitoring equipment. Auxiliary power for chemical addition, treatment, and monitoring equipment is not required if the treatment, chemical addition, control, and monitoring equipment is not necessary to meet the primary drinking water standards in ch. NR 809 or the continuous disinfection requirements of chs. NR 810 and 811.

NR 811.27(1)(1) Power sources. Standby power may be provided by any of the following:

NR 811.27(1)(a)(a) A dedicated on-site generator or engine. A dedicated on-site generator may be located inside or outside the building. Dedicated on-site engine-generator sets installed within the building shall be located in a separate room. Diesel fuel tanks shall be provided with secondary containment and interstitial leakage monitoring and the installation shall receive written approval from the department of safety and professional services or its authorized agent under ch. ATCP 93 prior to installation. All fuel lines shall be exposed above grade. Water lines to water cooled units shall be provided with backflow prevention in accordance with s. SPS 382.41.

NR 811.27(1)(c)(c) A portable power source not owned by the municipality but only if the water system owner obtains a written agreement with the owner of any portable power source, including tractors or trailered engine-generator sets, that requires the water system owner to have primary access to the power source in an emergency and that allows the portable power source to be brought to the water system as required for testing. The portable power source shall be located in the community if practical.

NR 811.27 NoteNote: The department recommends the use of water system owned dedicated on-site or portable engine-generator sets in all cases. It is recommended that the equipment necessary to convert natural gas fueled engines to propane be maintained on site in case the natural gas supply has to be shut off for any significant length of time. It is recommended that exterior engine-generator set installations be installed within a locked security fence.

NR 811.27(2)(2) Alternate prelubrication methods. The pump installation shall be provided with a prelubrication line with a valved bypass around the automatic control and backflow protection, if appropriate, in order to allow temporary continuous prelubrication, whenever automatic prelubrication of pump bearings is necessary and an auxiliary power supply is provided that will not provide power to the automatic prelubrication controls.

NR 811.27 HistoryHistory: CR 09-073: cr. Register November 2010 No. 659, eff. 12-1-10; correction in (1) (a) made under s. 13.92 (4) (b) 6., 7., Stats., Register December 2011 No. 672; correction in (1) (a) made under s. 13.92 (4) (b) 7., Stats., Register October 2013 No. 694; CR 22-074: am. (1) (c) Register January 2024 No. 817, eff. 2-1-24.

NR 811.28(1)(1) Suction or wet wells. Suction or wet wells, including installations where the pumps are installed on top of a reservoir, but excluding remote booster pumping installations shall:

NR 811.28(2)(2) Suction lift. Suction lift shall be allowed only for distances of less than 15 feet and where provision is made for priming the pumps. Suction lift may not be permitted if buried piping carries the finished water.