Customize and Download this "Irrigation Installation Contract". Create a polished Irrigation Installation Contract with Venngage's customizable template.Edit text, colors, fonts, and more. Easily Create an Irrigation Contract for Your Customers. Download a free irrigation contract template to establish clear service terms with your clients. How to fill out the Irrigation Distribution System Installation Agreement? 1. Gather legal descriptions of your property. 2. All bids must include a completed and signed Form of Agreement (Form 00500) as part of the bid. Contact the PWSA permit counter at to arrange for completing these forms and paying the required fees.