Westland District Council - The form required to be completed for Backflow Prevention Device consent application: http://www.westlanddc.govt.nz/index.cfm/1,385,html Westland District Council http://www.westlanddc.govt.nz/img/logo.gif http://www.westlanddc.govt.nz/index.cfm/1,385,html Westland District Council 60 en The form required to be completed for Backflow Prevention Device consent application: Backflow Preventers are specialist devices that must be installed correctly and continue to work. The Building Act and Code provides specific standards for backflow prevention devices http://www.westlanddc.govt.nz/index.cfm/1,385,737,html