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On-site Wastewater Systems: Design and Management …
www.aucklandcity.govt.nz1 The purpose of TP58 is to provide guidance for the design and maintenance of on-site treatment and disposal systems for domestic wastewater from households and institutions.
TP58 On-site wastewater systems 2004 - Auckland …
www.aucklandcity.govt.nz136 . Methods for operation of a pump dosing device are either on-demand or timer control of which timer control is the most effective and preferred method.