If any person shall in any way intentionally or maliciously damage or obstruct any waterline of any public institution, or in any way contaminate or render the water impure or injurious, he shall be guilty of a Class 1 misdemeanor. (1893, c. 63, s. 3; Rev., s. 3458; C.S., s. 7526; 1993, c. 539, s. 1014; 1994, Ex. Sess., c. 24, s. 14(c).)