Section 9-303.11 - Disposal(A) Every SERVICE BASE shall have an APPROVED sanitary septic system for sanitary disposal of liquid waste from the MOBILE FOOD ESTABLISHMENT wastewater collection tank.(B) When liquid waste cannot be discharged directly to sanitary sewers, a hose with a minimum 1½ inch half-union type attachment for connection to the MOBILE FOOD ESTABLISHMENT waste water tank shall be provided.(C) The hose used for disposal of liquid waste shall be maintained in a clean and serviceable condition and when not in use shall be stored in a separate cabinet labeled "for waste water hose only."Wis. Admin. Code Department of Health Services § 9-303.11