1. Water & Waste Pipe Testing Inc. (1999). A Report for Conducting a Water Leak Detection Survey on the Entire Water Distribution System for the Town of Ipswich. Wakefield, MA, USA.
2. Georgia Enviromental Protection Division. (2007). Water Leak Detection and Repair Program. Atlanta, USA: Georgia EPD.
3. New Mexico Environmental Finance Center. (2006). Analysis of Fluid Conservation System's Leak Detection Technology. Albuquerque, NM, USA.