It is unlawful for any person, persons or corporation to throw, drain, run or otherwise discharge into the waters of any stream or lake within the city, or to cause, permit or suffer to be thrown, run, drained, allowed to seep, or otherwise discharged into such waters, or upon the land of another, any material that shall cause or tend to cause a polluted condition of such waters or land of another. It is a violation of this section to permit the effluent from any drainage field or septic tank to run or seep into any ditch or stream, or upon the land of another, after a health official of the city shall have notified the owner or occupant of the premises on which said septic tank or drainage field is located, that the same has not been lawfully installed or is operating improperly. (1961 code § 13.04.020.)