Local Government (Water Services) Act 2025

Provision of water services: operational matters - Management of stormwater networks - Stormwater network risk management plans

203: Content of stormwater network risk management plan

You could also call this:

"What to include in a plan to keep your local stormwater system safe"

Illustration for Local Government (Water Services) Act 2025

A stormwater network risk management plan is a document that you will use to understand and manage the risks to the stormwater network in your area. This plan must include a map of the stormwater network and identify all critical infrastructure, such as important pipes and pumps. You must also identify any hazards that could affect the operation of this critical infrastructure, such as heavy rainfall or flooding.

You will need to assess the risks of these hazards and describe how you will manage them to prevent adverse impacts on the network. The plan must also identify overland flow paths and watercourses, such as rivers and streams, that receive stormwater from or take stormwater to critical infrastructure. If these paths cross private land, they must be included in the plan.

The plan must specify any stormwater network bylaws that you must comply with when managing risks and the capacity of overland flow paths and watercourses. You must also include any stormwater environmental performance standards made under section 139A of the Water Services Act 2021 and explain how you will meet these standards. The plan may refer to relevant management plans prepared by a territorial authority or a water organisation under the Resource Management Act 1991.

In this plan, a hazard is anything that could affect the operation of critical infrastructure, including existing, emerging, or potential future hazards. You must consider all these hazards when preparing the stormwater network risk management plan to ensure the network operates safely and efficiently.

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View the original legislation for this page at https://legislation.govt.nz/act/public/1986/0120/latest/link.aspx?id=LMS1004566.


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202: More than 1 responsible water service provider, or

"When multiple groups manage a stormwater network, they must work together to create a plan."


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204: Consultation on proposed plan, or

"Talking to the public about plans for managing stormwater risks"

Part 3Provision of water services: operational matters
Management of stormwater networks: Stormwater network risk management plans

203Content of stormwater network risk management plan

  1. A stormwater network risk management plan must—

  2. contain a map of the stormwater network in the water service provider’s service area; and
    1. identify all critical infrastructure in the service area; and
      1. identify all hazards that could affect the operation of critical infrastructure in the stormwater network; and
        1. in relation to each hazard identified under paragraph (c), assess any risks of adverse impact on the network (that is, the infrastructure and its operation); and
          1. describe how the risks assessed under paragraph (d) are to be managed; and
            1. identify all overland flow paths and watercourses in the service area that—
              1. receive stormwater from, or take stormwater to, critical infrastructure in the network; and
                1. cross over or beneath private land; and
                2. specify any stormwater network bylaws that must be complied with—
                  1. when managing risks under paragraph (e); and
                    1. when managing the capacity of overland flow paths and watercourses identified under paragraph (f) to receive stormwater from, or take stormwater to, critical infrastructure in the network.
                    2. In addition, a stormwater network risk management plan—

                    3. must include any stormwater environmental performance standards made under section 139A of the Water Services Act 2021 and how the water service provider will meet those standards; and
                      1. may refer to any relevant management plans prepared by a territorial authority or a water organisation under the Resource Management Act 1991.
                        1. In this section, hazard, in relation to operating critical infrastructure, means any of the following:

                        2. an existing hazard:
                          1. an emerging hazard:
                            1. a potential future hazard.