Stormwater Discharge Certification


What is a Stormwater Discharge Certificate?

A Stormwater Discharge Certificate grants approval for stormwater to be discharged into the public stormwater network. It enables Council to manage discharges into the public network and ensure compliance with Environment Canterbury's discharge requirements.

Application form and application guide

Application for Stormwater Discharge
Application Guide

Do I need a Stormwater Discharge Certificate?

This is not required for vacant land; only once building.

How do I get a Stormwater Discharge Certificate?

Please submit an Application for Stormwater Discharge identifying how you intend to manage stormwater for your proposed site or project.

If you need help to complete your Application for Stormwater Discharge, please refer to our Application Guide

How much does it cost to apply?

No application fee is payable if Council's Acceptable Solution is chosen.

If an alternative design solution is submitted, application fees are based on the actual cost of assessment.

What happens once my application is approved?

Once we have granted a Stormwater Discharge Certificate, we will provide you with a Stormwater Device Registration Form.

You will need to complete this and return it to us upon installation/construction of your stormwater management devices before a before a CCC (Code Compliance Certificate) can be issued by the Building Department.

Stormwater Discharge Map

Use our Stormwater Discharge Application Map to view the Stormwater Management Area and the latest flood and natural hazard maps for your stormwater discharge application.

How to use the map:

  • Open the Stormwater Discharge Application Map
  • Select the layers list icon from the menu at the bottom of the screen
  • The legend in the menu to the left of the layer list icon at the bottom of the map
  • To find a specific property, either use ‘find address or place’ search button at the top of the map or use the +/- at the top left of the map to zoom in and out

Acceptable Solutions

Acceptable solutions to meet the stormwater management requirements are continually being developed.

Acceptable Solution 1
Use of Rainwater Tanks for Stormwater Management for residential development with total roof areas greater than 30m2 and up to or equal to 250m2

Acceptable Solution 1 Tank Selection Sheet

For your convenience, you can the Microsoft Excel Spreadsheet above to select a rain tank. The rain tanks provided with this tool can be used to meet the stormwater management quantity requirement.

Helpful Resources

Last updated: 20 Jun 2023