No person shall swim, wade, fish, hunt, or deposit any animal, vegetable, mineral matter of substance in, or cause or permit any horse, mule or other animal to go into, or otherwise trespass in or upon any reservoir or aqueduct, or in any pipe or stream connected therewith, nor shall any person do any act or thing which will pollute, imperil or impair the purity and wholesomeness of any water intended to be used for household or domestic purposes. The provisions of this section prohibiting fishing shall not apply to any lake, stream or reservoir used or maintained in connection with the water system of the city situated north of the intake of the Haiwee Reservoir of such system. (Added by Ord. No. 127,508, Eff. 6/29/64.)