Please note that our goal is ensure that your property is in compliance with the Water District once the backflow prevention assembly testing is completed. The only means of ensuring your compliance is by utilizing the letters you receive from the Water District. We require that you please send these letters to us either via email (info@backflowconsulting.com) or via fax (303.537.0129) or via text (303.537.0126). Even if we have been testing your assembly(ies) for years, we are still requiring these letters just be positive that we are meeting the current requirements on your notice. Without the letters, we will not guarantee that the testing we perform will bring your property into compliance. If you have any questions, please reach out to us. Phone: (303) 537-0126, Email: info@backflowconsulting.com. Thank you and we look forward to working with you.