http://www.level.org.nz/water/wastewater/sanitary-plumbing-systems/discharges-and-vents/
https://www.kumeuplumbing.co.nz
Also on https://trademe.nz/services/trades/plumbing/listing/1775426883
NZ/Plumbing (last edited 2021-01-29 22:11:02 by PieterSmit)