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Stormwater Bylaw Review 2021

STORMWATER BYLAW

Purpose

The purpose of the Stormwater Bylaw is to:

  • a) To achieve a holistic and integrated approach to the management of stormwater as part of Council’s overall three waters management.
  • b) Minimise and control the discharge of Contaminants into the Public Stormwater Drainage Network.
  • c) Minimise the effects of discharges from the Public Stormwater Drainage Network on the downstream receiving Environment.
  • d) Manage the Public Stormwater Drainage Network, and the land, structures and infrastructure associated with that network, so as to protect the public from Nuisance and promote and maintain public health and safety.
  • e) Enable the Council to meet relevant objectives, policies, standards and resource consents for discharges from the Public Stormwater Drainage Network to the receiving Environment.
  • f) Protect the land, structures and natural features that make up the Public Stormwater Drainage Network.
  • g) Prevent the unauthorised discharge of Stormwater into the Public Stormwater Drainage Network and ensure that Private Stormwater Drainage Systems are not causing a Nuisance or harm to the Council’s networks infrastructure.
  • h) Define the obligations of the Council, installers, Occupiers and the public in matters related to the discharge of Stormwater and management of the Public Stormwater Drainage Network and the administration of equitable costs and charges.

Key Changes to the Stormwater Bylaw

Key Change

Reason for the Change
  1. Inclusion of an introductory note including the Overarching Purpose, Objectives and Context of the new Bylaw

To set the scene for a holistic and integrated approach to all three of Council’s Water Services and meet Councils District Plan, Policies and Strategies
  1. Introduce Stormwater Management Devices and Stormwater Retention and Detention Device requirements along with the concept of Cleaner Production

Such procedures are compatible with more sustainable approaches to stormwater management and their use will be compatible with achieving the overarching purpose of the new Bylaw
  1. Water tanks - Making dual purpose rainwater tanks mandatory for new urban residential dwellings

Rainwater tanks will have dual purpose, to attenuate and retain stormwater so it can be used to provide relief to the potable water network in times of peak demand and allow people to continue watering their gardens when and if water restrictions are imposed.
  1. Expand and strengthen contents in respect to prevention of contaminant discharges to the stormwater and drainage networks and systems

Current Bylaw needs strengthening in this respect in order to protect the infrastructure, safety and health of people and the receiving environment
  1. Inclusion of reference to Council’s operative stormwater discharge consents (issued by the Hawke’s Bay Regional Council) and the need for stormwater dischargers not to cause exceedance conditions in these consents

Reference to these consents is not included in the current Bylaw


Perceived Problems The Stormwater Bylaw seeks to address the following perceived problems in the Central Hawkes Bay District: a) Discharge of contaminants into the stormwater and drainage networks and systems. b) Damage to the Council’s public stormwater and drainage networks by contractors and other parties. c) Non-compliance with Council’s requirements for the design, construction and operation of stormwater works. d) Discharges exceeding the capacity of Council’s stormwater and drainage network. e) Stormwater discharges leading to non-compliance of Council’s resource consents. f) Cumulative adverse effects of multiple stormwater discharges as well as other discharges.

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