Drainage plans

Find out about how to get a drainage plan for your property before you do any building work.

How to get a drainage plan

You can view a current map of known drainage pipes and networks using the Regional Water Stormwater Wastewater App available on the Tiaki Wai website.

Drainage plans submitted as part of a building or resource consent application may be available as files in the Hutt City Council property & building search.

What's in a drainage plan

A drainage plan should include your property's general layout and all the drains on your land.

The drainage plan should also show you the location of surface water drains and foul water drains. If you have any other drains on your property, such as effluent tanks or storage areas, these drains should also be marked on your drainage plan.

The water and drainage plan for your property may also include:

  • public and private sewer pipes
  • public and private stormwater pipes
  • water supply pipelines up to the property’s water meter
  • the layout of the drainage, including the location of access points
  • private systems, septic tanks, treatment plants and cesspits
  • discharge points from the site
  • diameter and material of pipework.

Building over Tiaki Wai owned drains

If you're doing any building work, check that you're not building over a Tiaki Wai drain. You can't build on Tiaki Wai drains because they need to be able to check, repair and replace pipes quickly if needed.

For more information see building over or next to the network.

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