Failure to keep the sewer pipe, i.e., the pipe leading from the plumbing system to the city main, clean and maintained in a proper manner will give the city the right to cut off or cause to be cut off the water connection, which shall not be reconnected until the sewer pipe is cleaned and maintained properly. If the owner has his own private water supply, the city shall have the right to plug the sewer line leading to and connecting with the plumbing system, and the owner shall have no right to unplug the sewer line until the sewer pipe leading from the plumbing system to the city main has been maintained and cleaned and in proper condition. Unplugging the sewer line or reconnecting the water supply from the water main, until such sewer pipes are cleaned and maintained properly, shall be considered a violation of this section.