A nuisance consists of unlawfully doing an act, omitting to perform a duty or anything or condition which:
   1.   Annoys, injures or endangers the comfort, health or safety of others;
   2.   Offends public decency;
   3.   Unlawfully interferes with, obstructs, tends to obstruct or renders dangerous for use, any lake, drainageway, stream, stream basin, public park, street or other public property; or
   4.   In any way renders persons insecure in life or in the use of property.