NR 113.06 HistoryHistory: Cr. Register, September, 1996, No. 489, eff. 1-1-97; correction in (2) (b) made under s. 13.92 (4) (b) 7., Stats., Register February 2010 No. 650; CR 20-046: am. (2) (intro.), renum. (2) (b) to (2) (b) 1. and am., cr. (2) (b) 2., 3., am. (2) (d) (intro.), 1., 2., r. and recr. (2) (d) 3., am. (2) (f), (k), (m) (intro.), 1., 2., cr. (2) (m) 2m., am. (2) (m) 3., (3) (b), r. and recr. (3) (c), am. (3) (e), (f), cr. (3) (g) Register September 2021 No. 789, eff. 10-1-21.

NR 113.07NR 113.07 Disposal of septage. Every business engaged in servicing or authorizing servicing shall comply with all of the following requirements for disposal of septage:

NR 113.07(1)(a)(a) Disposal of septage shall be by discharge into a POTW or other facility for treatment or storage under a WPDES permit or to approved agricultural land, subject to all of the following:

NR 113.07(1)(a)1.1. Septage disposal at WPDES permitted facilities shall comply with the WPDES permit requirements for that facility. An allowable WPDES permitted facility is one that meets requirements under ch. NR 204 for septage treatment which may be defined as a centralized septage treatment facility.

NR 113.07(1)(b)(b) All of the following restrictions apply to the land application of septage from non-holding tank POWTS on frozen or snow covered ground:

NR 113.07(1)(b)1.1. Land application of septage removed from non-holding tank POWTS due to emergencies, including situations such as freeze-ups, is allowed if no other reasonable disposal methods are available. Reasonable disposal options include hauling the waste to a nearby treatment plant that will accept the septage in accordance with sub. (2). A business using land application for disposal shall obtain special written approval in advance from the department for specific sites that may be used for emergency situations. In addition, all of the following restrictions apply:

NR 113.07(1)(b)2.2. Septage removed from non-holding tank POWTS due to a routine pumping may not be land applied during months when the ground is frozen or snow covered. Septage removed from non-holding tank POWTS shall be disposed at a POTW or stored under the requirements of this chapter.

NR 113.07(1)(b)3.3. Except as provided under par. (f), septage removed from non-holding tank POWTS that are regularly pumped more frequently than once every 6 months may be land applied during the months when the ground is frozen or snow covered. The restrictions under par. (c) apply to the land application of this septage.

NR 113.07 NoteNote: During months when the ground is frozen or snow covered, the land application of waste from non-holding tank POWTS is strongly discouraged. During these months, hauling septage from non-holding tank POWTS to a POTW or storing until land application can be completed on non-frozen, non-snow covered land application sites are the preferred methods of disposal.

NR 113.07(1)(c)(c) Except as provided in par. (f), holding tank waste may be land applied during months when the ground is frozen or snow covered, on approved sites. The following restrictions, at a minimum, apply:

NR 113.07(1)(c)1.1. Sites or fields used shall have slopes less than or equal to 6 percent. If slopes are greater than 2 percent but less than or equal to 6 percent, a site management plan is required.

NR 113.07 NoteNote: During months when the ground is frozen or snow covered, the land application of septage from holding tank POWTS is strongly discouraged. During these months, hauling septage from holding tank POWTS to a POTW or storing until land application can be completed on non-frozen, non-snow covered land application sites are the preferred methods of disposal.

NR 113.07(1)(d)(d) Any land application of septage from holding tank POWTS or non-holding tank POWTS on frozen or snow covered ground is also subject to restrictions under sub. (3). Injection or incorporation may be utilized while the depth of frost is less than 4 inches.

NR 113.07(1)(e)(e) Large commercial, industrial, recreational, or residential development holding tank POWTS that singly or when added together or increased by successive additions generate 3,000 gallons of septage per day or greater shall contract with a wastewater treatment facility for treatment of the septage. The contract terms shall provide assurance that the septage from the system will continually be conveyed to, and accepted, at the wastewater treatment facility. If a service area designation exists under s. 281.41 (3), Stats., the wastewater treatment facility shall amend the service area to include the commercial, industrial, recreational or residential development. The department may not indicate sufficient disposal capacity to the department of safety and professional services, until the service area adjustments have been completed and approved.

NR 113.07 NoteNote: By agreement and administrative code, the department of safety and professional services will not issue a plan approval for a 3,000 gallons per day or greater holding tank POWTS without the department’s approval of the method of wastewater disposal as provided under s. SPS 383.22 (2) (b) 2.

NR 113.07(1)(f)(f) Disposal of wastewater from small holding tank and non-holding tank POWTS that generate less than 3,000 gallons of septage per day shall be by discharge into a POTW if any of the following conditions apply: