(1) A person who—
(a) contaminates or fouls the water of any public well, tank, spring, or reservoir;
(b) causes any obstruction to the public use of any navigable water, well, spring, or reservoir, so as to deprive the public of the benefit thereof,
is liable on summary conviction to a fine of $1,000 or to imprisonment for 2 years, and where the offence continues or is repeated, to a fine of $5,000 or imprisonment for 4 years.
(2) No such nuisance is excused on the ground that it causes some convenience or advantage.