1. The Report of President’s Commission on Critical Infrastructure Protection (1997) Critical foundations: protecting America’s infrastructures. Available at
https://www.fas.org/sgp/library/pccip.pdf
. Accessed 1 March 2014
2. Edwards MA (2006) Chapter 8: alternatives for premise plumbing. In drinking water distribution system: assessing and reducing risks. National Research Council, The National Academic Press, Washington DC
3. Loganathan GV, Lee J (2005) Decision tools for optimal replacement of plumbing system. J Civil Environ Eng 22(4):189–204
4. Kirmeyer G, Friedman M, Martel K, Howie D, LeChevallier M, Abbaszadegan M, Karim M, Funk J, Harbour J (2001) Pathogen intrusion into the distribution system. American Water Works Association Research Foundation, Denver, CO
5. Marshutz S (2001) Hooked on copper: a comparison shows the gap is narrowing with PEX gaining popularity as a preferred material in new construction and repiping work. Reeves Journal.
http://www.highbeam.com/doc/1G1-82881389.html
. Accessed 25 Dec 2013