Independent irrigation companies usually do free bids. The following contract requirements and forms are to be included in the construction contract documents.This page contains the Private Water Systems Program forms for the Local Health Districts and Private Water Systems Contractors. Ohio contractor licensing requirements vary based on municipality. Make sure you know all the requirements to get licensed. On new construction projects, I always ask for a production schedule. How do I fill this out? To fill out this agreement, gather all necessary property details and subdivision plans. For water and sewer certification, contractors must submit an application(PDF, 203KB) to 111 N Front Street and take an in-person written test.