Stormwater Regulations

This page contains information on stormwater regulations in the Tasman District.

Residential, Rural, Commercial and Industrial Zones

Stormwater is of concern for two main issues: one related to the volume and timing of runoff water, and the other related to potential contaminants that the water is carrying.

Each zone in the district might have a different consideration when dealing with stormwater.  Rules by zone are set out in the Tasman Resource Management Plan, alternatively you can refer to Councils Best Practice Guide.

  • Remember all stormwater whether to a pipe or open drain ultimately will end up in a stream or the estuary. These contaminants could kill aquatic life and have devasting effects on the environment.

Subdivision Stormwater

Stormwater discharge consents are required under the Tasman Resource Management Plan generally on all subdivision applications with the following objectives:

  • maintaining existing water quality
  • enhancing water quality where existing quality is degraded for natural and human uses or values
  • mitigate adverse effects downstream

The objectives and policies are covered under Sections 33 and 36 of the TRMP and meet the requirements of Section 15 of the Resource Management Act.

The Tasman Resource Management Plan Section 36.2.7 states:

Discharge of water into water is permitted, if:
  • the discharge does not cause erosion of the bed of any river or stream;
  • the discharge does not contain more than 0.5 grams per cubic metre of free or residual chlorine;
  • discharge does not contain contaminants;
  • the natural water temperature being less than 20°C is not raised above 20°C or increased by 3°C;
  • the discharge does not exceed 5 litres per second
  • does not obstruct fish passage
  • does not cause the production of conspicuous oil, grease films, scums, foam, floatable or suspended materials
  • does not cause or contribute to the destruction of any habitat plant or animal in any water body or coastal water;
  • does not cause or contribute to erosion of land including the bed of any stream or drain