A person who willfully or without authorization opens a fire hydrant, breaks, cuts away, injures or destroys a dam, ditch, intake, gate, hydrant, pipeline, flume, canal or powerhouse, transformers, powerlines, utility poles or cables of a public or private water or utility system or power plant shall be deemed an ordinance violator. (Ord. 210 § 4, 1978; 1978 code § 9.56(a))