Each well drilled within the city limits shall be equipped with a bradenhead with the working pressure of not less than the pressure which a prudent operator would expect under the conditions known. The bradenhead shall not be welded. Bradenheads installed on the surface casing shall be set above ground level and shall be equipped with fittings having a working pressure rating of not less than the pressures which a prudent operator would expect under the conditions known. The bradenhead pressure shall be checked at least once each calendar month, and if pressure is found to exist, proper remedial measures shall be immediately taken to eliminate the source and the existence of the pressure. (Ord. 1939 § 4, 2009)