1. Ambrose M. Burn S. DeSilva D. and Rahilly M. "Life cycle analysis of Water Networks." Proc. Plastics Pipe XIV: Plastics Pipes Conferences Association.
2. American Water Works Association (AWWA) (2015). "Buried No Longer: Confronting America's Water Infrastructure Challenge." http://www.awwa.org/Portals/0/files/legreg/documents/BuriedNoLonger.pdf (May 8 th 2015).
3. American Water Works Association (AWWA) and American National Standards Institute. (2007). "AWWA standard for polyvinyl chloride (PVC) pressure pipe and fabricated fittings 4 in. through 12 in. (100 mm through 300 mm) for water transmission and distribution." Denver Colo: American Water Works Association.
4. ASCE
(2013). 2013 Report card for America's infrastructure American Society of Civil Engineers Reston Va.
5. AWWA C151-Ductile Iron Pipe (2010). "Centrifugally Cast in Metal Molds or Sand-Lined Molds for Water or Other Liquids" ANSI/AWWA C151/A21.51-09 (Revision of ANSI/AWWA C151/A21.51-02).