It is hereby agreed that all work will be done in a workmanlike manner, with the rights of the public safeguarded and all plumbing installed, constructed or replaced shall be in accordance with the specifications as to labor methods and materials used as permitted and required by the State of Iowa Plumbing Code and amendments thereto and to the City Code of Spencer, Iowa. Further, that the City of Spencer, Iowa is to be saved harmless from all expenses or cost in connection therewith and from all damages, law suits, attorney's fees, costs or charges that may accrue on account of said work. I further agree to notify the plumbing inspector of completed plumbing as required by City Code.