The servicing of a camping unit transfer tank shall be performed in a manner to prevent the discharge of wastewater into the surrounding soil or onto the ground surface.
Wis. Admin. Code Department of Safety and Professional Services SPS 327.55
The servicing of private sewerage systems including septic and holding tanks, dosing chambers, grease interceptors, seepage beds, seepage pits, seepage trenches, privies and portable restrooms is addressed in ch. NR 113, which is administered by the department of natural resources.