Editing Shell USA (section)

===Polybutylene lawsuit===
Between 1978 and 1995, Shell Oil produced [[polybutylene]] pipes, which corrode when exposed to chlorine. A [[class action]] lawsuit was filed in 1995 against Shell Oil when the polybutylene pipes caused flooding in many households in the U.S. and Canada.<ref name="canada">{{cite press release| title=$20 million Settlement Announced in Class Action with Shell| date=June 11, 2004| url=http://www.classaction.ca/CMSFiles/PDF/Product/PolyPipe/Shell_PBP_PR_Release.pdf| publisher=Siskinds Law Firm| access-date=February 27, 2012| url-status=dead| archive-url=https://web.archive.org/web/20140715042337/http://www.classaction.ca/CMSFiles/PDF/Product/PolyPipe/Shell_PBP_PR_Release.pdf| archive-date=July 15, 2014| df=mdy-all}}</ref>  The settlement required Shell Oil to pay for the re-installation of piping for millions of houses for claims filed through May 2009.<ref name="pipe">{{Cite news| title=Shell, Hoechst Agree to Pay $850 Million| url=https://www.latimes.com/archives/la-xpm-1995-10-04-fi-53241-story.html| date=October 4, 2005| work=Los Angeles Times| access-date=February 27, 2012}}</ref>