No person shall maintain any of the following establishments, businesses, or activities without a valid public health permit to do so:
(a) Public swimming pools;
(b) Public water systems with fewer than 200 service connections;
(c) Food crop growing and harvesting operations;
(d) Infectious waste. (§ 1, Ord. 858, eff. October 25, 1979, as amended by § 2, Ord. 890, eff. September 18, 1980, § 5, Ord. 1074, eff. May 12, 1988, and § 2, Ord. 1099, eff. October 19, 1989)