Their site is the source of the original concern
Thank you for your suggestion, but it is the regulations provided by the Office of Boating Safety where the original concern arose. I've copied the pertinent text below:------------Begin Quote-------------------------------Portable ToiletsPortable toilets are illegal on Ontario waters.The owner of a pleasure craft shall ensure that each toilet and the holding tank(s) is/are installed so that;The toilet and equipment are connected in such a manner that the equipment receives all toilet waste from the toilet.Equipment designed for the storage of human excrement is provided with a deck fitting and such connecting piping as is necessary for the removal of toilet waste by shore-based pumping equipment.No means of removal of toilet waste is provided other than the means mentioned above.All parts of the system for removal of toilet waste are congruent with one another and the boat.-----------End Quote ----------------------------------Since it is improbable that one finds many Hobie Cats, Lasers or most any boat under 20 feet equipped with a marine head and holding tank with a deck pump-out there must be some loophole or "selective enforcement" going on. For instance, the Operator Competency Certificate requirements only apply to foreign boats that are in Canada for more than 45 days. I will attempt to contact Office of Boating Safety directly for more details.