Section SPS 391.10 - Composting toilet systems(1) The materials, design, construction and performance of a composting toilet system shall conform to NSF Standard 41.(2) All composting toilet systems shall be listed by a testing agency acceptable to the department. Note: Listing agencies acceptable to the department include the American Gas Association; Canadian Standards Association; NSF International; Underwriter's Laboratories; and Warnock Hersey.
(3)(a) Components for the storage or treatment of wastes shall be continuously ventilated.(b) Ventilation ducts or vents for the composting toilet system shall conform to s. SPS 382.31 (16). Note: See appendix for a reprint of portions of s. SPS 382.31 (16).
(4)(a) The disposal of the compost shall be in accordance with 40 CFR part 503.(b) The disposal of any liquid from a composting toilet system shall be either to a public sanitary sewer system or a POWTS conforming to ch. SPS 383.Wis. Admin. Code Department of Safety and Professional Services SPS 391.10
Cr. Register, April, 2000, No. 532, eff. 7-1-00; correction in (3) (b), (4) (b) made under s. 13.92(4) (b) 7, Stats., Register December 2011 No. 672.Amended by, CR 17-065: am. (4) (a) Register June 2018 No. 750, eff. 7/1/2018