​Wastewater is used water from home, business and industry sources and it includes all liquid that drains from the kitchen, laundry and bathroom.

Wastewater is 99.9 percent water. The remaining percent consists of organic matter, food scraps, greases, oils and debris such as sand, grit and plastic.

Our wastewater network services 50,000 households, and provides trade waste services to 4,000 commercial and industrial premises. It consists of: 

  • 797 km of pipes ranging from 100mm to 1800mm in diameter
  • 15,074 manholes
  • 53,251 connections
  • 132 pumping stations
  • 6 major wastewater pipeline bridges
  • 1 wastewater treatment plant​

We protect the health and safety of the community and the people who provide the activity, provide a reliable, resilient and responsive wastewater service, Ensure sustainable, environmental and economic delivery which meets customer expectations and Plan for  the future growth and demand of our city.

Managing wastewater

Hamilton City Council provides and manages the reticulated piped wastewater systems within Hamilton City. These systems carry wastewater to the Wastewater Treatment Plant in Pukete, where it is treated before discharge.

Council owns and operates all the assets from the customer property boundary to the treatment plant effluent outfall which are used to collect, convey, treat and dispose of wastewater and trade waste.

A major issue is 'infiltration', which refers to stormwater that has flowed into the wastewater network.

Stormwater and wastewater are very different and so our systems for each are very different:

  • Stormwater is uncontaminated and can be discharged directly to waterways.

  • Wastewater is contaminated, and must be fully treated, to remove the contaminants, at the Wastewater Treatment Plant before being discharged.

It is very important that stormwater is not directed into the wastewater system, and that wastewater is not directed into the stormwater system as this can result in overloading of the systems or untreated wastewater entering the environment. This can significantly affect public health, the system and the environment.

If you have one of these occur in your property, you must contact a plumber straight away to have it rectified. 

  • Stormwater flows into your gully traps that are too low.
  • Downpipes from your roofs lead to wastewater pipes/your gully trap.
  • Drainage pipe joints leak or cracked pipes.

Wastewater connections

Hamilton City Council has a wastewater connections process that enables Council to manage the wastewater network. 

Click here for information on how to connect to the Hamilton City Council Wastewater System.

Page reviewed: 24 Apr 2020 10:06am