The OPERATOR of a TEMPORARY FOOD ESTABLISHMENT shall arrange for public or private toilet facilities during all hours of operation for use by personnel operating the TEMPORARY FOOD ESTABLISHMENT.
Wis. Admin. Code Department of Agriculture, Trade and Consumer Protection 10-301.11
Guidance on the number of public toilet facilities can be found in the Wisconsin Commercial Building Code, chs. SPS 361 to 366. Contact the Safety and Buildings Division at the department of safety and professional services, P.O. Box 2509, Madison, WI 53701, telephone 608-266-3151 and 711 (TTY) or http://dsps.wi.gov/ sb/SB-HomePage.html.