Standards, specifications and approved products
The ‘Regional Standard for Water Services’ and 'Regional Specification for Water Services' were revised and released in December 2024. Download the latest versions below.
All work on the public water infrastructure that we manage for our council owners should be consistent and meet quality requirements. This applies throughout the service life of stormwater, wastewater and drinking water networks – from the design through to construction, maintenance, renewal, upgrades, and decommissioning.
To support this work, we provide regional minimum standards and specifications, and a list of approved products.
We revise these regularly to include changes in policy and best practice, referenced standards, and legislation. We recommend using the most recent version available.
Please note the resources below are intended for use on projects in the areas managed by Wellington Water. We currently oversee water infrastructure for Greater Wellington Regional Council, Wellington City Council, Porirua City Council, Hutt City Council, Upper Hutt City Council and South Wairarapa District Council.
The regional standard
The ‘Regional Standard for Water Services’ describes minimum standards for drinking water, wastewater and stormwater infrastructure. Following or exceeding the requirements in this standard will ensure a regionally consistent quality of design and construction of water services across the region.
Download ‘STD_0001 Regional Standard for Water Services’
We periodically revise and update this standard to reflect changes in policy, best practice, technology, referenced standards and legislation.
See a summary of the most recent updates to 'STD_0001 Regional Standard for Water Services'
This standard must be used with the ‘Regional Specification for Water Services’ below on this page. We acknowledge that some developments refer to older versions of the ‘Regional Standard for Water Systems’. We encourage you to meet the requirements in the most recent version of the standard, where possible. These are most closely aligned with current best practice.
Technical specifications
We encourage you to meet requirements in the most recent versions of the specifications below, where possible. These are most closely aligned with current best practice.
Regional specification
The 'Regional Specification for Water Services' provides detail about how to meet the requirements in the regional standard. It contains minimum technical specifications for:
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materials
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construction
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installation
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testing, and
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commissioning.
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Download and view 'STD_0002 Regional Specification for Water Services'
See a summary of the most recent revisions to ‘STD_0002 Regional Specification for Water Services'
Drawing specification
The ‘Regional As-Built Specification for Water Services’ provides technical guidance on consistency for engineering drawing production including:
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drawings
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as-built data
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other associated information.
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See also ICT_0004 Regional Draughting Manual for Water Services
General electrical specification
The ‘General electrical specification’ is intended for engineers, designers and developers providing products and services to Wellington Water.
Approved products
Certain products approved for use on the public network managed by Wellington Water. They are listed in the 'approved products register' also known as 'DESR_0001 Register of Approved Products for use in Water Services Infrastructure'.
View products in the 'approved products register'
The products listed in the register meet the requirements in the regional standard and specifications above. These products include commonly used pipeline fixtures and fittings for stormwater, wastewater, and drinking water networks.
Make sure you're using the most up-to-date version of the 'approved products register'. Section 1.1 of the register above shows the latest changes. We may review or withdraw the approval of products from the register at any time.
A product may not be in the 'approved products register' if:
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we haven't approved it for use in the project we manage, or
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it is one of the specialised products we don't include in the register, such as pumps, radio transmitters, and electrical components.
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If a product is not included in the 'approved products register', you should assume that the product is not approved. If you're thinking about recommending a product in a design solution that's not in the register, you'll need dispensation (permission).
For more information about requesting dispensation, see the next section below.
Using non-standard design or unapproved products
If you're working on water infrastructure in one of the areas managed by Wellington Water, we advise getting agreement early on, if you are:
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planning to use a design solution that does not follow the regional standard and specifications above, or
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recommending using a product that is not included in the ‘approved product register’.
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What you'll need to do depends on the type of project.
Wellington Water Capital Projects
If you plan to recommend using a non-standard design or unapproved products, you'll need to ask us for dispensation (permission).
Find out what you need to do in the ‘Regional Standard Dispensation procedure’. This procedure is available under Phase 3 of the ‘Project Toolbox’ (the ‘Capital Projects Delivery’ SharePoint site).
Make sure you contact us as early as possible, explain the situation clearly and let us know why you're making this recommendation. Email us via dispensations@wellingtonwater.co.nz.
Wellington Water Operations and Maintenance
If you plan to recommend using a non-standard design or unapproved products, you will need to ask us for dispensation (permission).
This is covered in the ‘Regional Standard Dispensation procedure’. This procedure is available under Phase 3 of the ‘Project Toolbox’ (the ‘Capital Projects Delivery’ SharePoint site).
If you don’t have access to a copy of the procedure, email us for a copy via dispensations@wellingtonwater.co.nz.
Make sure you contact us as early as possible, explain the situation clearly and let us know why you're making this recommendation.
Land development
We strongly recommend that you request dispensation (permission) at the same time as preparing your application for resource or building consent. If you obtain a resource consent without a dispensation, you may:
be unable to implement your resource consent, or
need to vary your resource consent.
You'll need to ask us for dispensation (permission), if you:
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are planning a land development project, and
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intend to use a design of product that isn't consistent with the 'Regional standard and specifications'.
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The process and how long it takes depends on where the development is, and the level of risk involved.
Dispensation managed by the Land Development team at Wellington Water
The Land Development team at Wellington Water manage dispensation processes if the development is in:
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Wellington City, Porirua City, Upper Hutt City, or the South Wairarapa District
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Hutt City, and the requested dispensation would involve high or medium risk.
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Submit your request for dispensation using the Land Development Dispensation Request Form.
Include your address and details of your proposal. This form also provides details on where to find information about assessing the risk. There are currently no fees for dispensation requests.
If you have any questions, email Land.Development@wellingtonwater.co.nz.
Dispensation managed by Hutt City Council
The Hutt City Development Engineering team manages applications for dispensation if:
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the development is in Hutt City, and
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the requested dispensation is assessed as low in risk.
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These dispensation requests are processed as part of applications for resource consent, land-use consent or building consent. To discuss dispensation for a network design before applying for consent, organise a pre-application meeting with Hutt City Council. There is an hourly charge for this service.
Build overs and build nears
Building over, or near, public water infrastructure is one of the most common types of dispensation application we receive. The main matters that we will consider for this type of application are:
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ongoing access to our infrastructure
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whether your works will damage our infrastructure.
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If you are granted dispensation to build over or near public water infrastructure, you must provide CCTV footage of the pipe condition. You'll need to provide this at your own expense before and after you commence the work. We will not organise it or reimburse you for it, so you should factor it into your project costs.
How we keep our standards and specifications up-to-date
We acknowledge that some developments refer to older versions of the 'Regional Standard for Water Services' above. We encourage you to meet the requirements in the most recent versions of the standard and specifications above, where possible. This is because the requirements in the most recent versions are more closely aligned with current best practice.
Download the latest version of the 'Regional Standard for Water Services'
Revisions to the regional standard and specifications
We revise and update the 'Regional Standard for Water Services' and the specifications above on this page periodically. This ensures these documents reflect changes in policy, best practice, technology, referenced standards and legislation.
To request a revision to the regional standard and specification, as-built and electrical specifications above, email standards@wellingtonwater.co.nz.
We'll consider your request when we next revise these documents.
Revisions to the 'approved products register'
Wellington Water may review or withdraw the approval of products from the register at any time. We may enter the market periodically to find new or alternative products for the register. This is prioritised to meet our business needs.
Download a copy of the 'approved products register'
We're currently unable to accept applications for new products to be included on the 'approved products register' until further notice. Check this webpage for future updates.
For further information, contact APR@wellingtonwater.co.nz.
More guidance
Safety in design
'Safety in design' means ensuring health and safety risks are managed throughout the lifecycle of structures, plant or while using hazardous substances.
For more information and tools, see the 'Safety in design' section of the 'Health and Safety expectations' page.
Read WorkSafeNZ's guideline: 'Health and safety by design: an introduction'
Guidance on drinking water
The 'Hygiene Code of Practice for Safe and Healthy Drinking Water' provides guidance on:
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good practice for people working on the drinking water supply network
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preventing contamination of drinking water
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delivering safe drinking water to customers.
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Download the 'WQMG_0001 Hygiene Code of Practice for Safe and Healthy Drinking Water'
Pump Stations
The 'Commissioning Guideline for Pump Stations' gives an overview of commissioning and integrating new pump stations into the council network. This includes the process and responsibilities.
View the 'ACM_0001 Commissioning Guideline for Pump Stations'
Designing to enable condition assessment in pressure pipes
The 'Design principles to enable condition assessment of pressure pipes' covers high-level design principles for designing pressure pipelines.
See 'DESP_0002 Design principles to enable condition assessment of pressure pipes'
Managing stormwater
For managing stormwater runoff, see 'SWG_0002 Managing stormwater runoff: The use of approved solutions for hydraulic neutrality'
This provides guidance for developing and assessing proposals for 'approved solutions' for residential hydraulic neutrality for stormwater. 'Approved solutions' are design solutions that we accept for use in the networks we manage also known as 'acceptable solutions'.
The following guide outlines steps for modelling stormwater flooding in small, ungauged urban catchment: 'SWG_0003 Reference guide for design storm hydrology'
Find out about best practice and our requirements for designing stormwater treatment devices:
'DESG_0001 Water sensitive design for stormwater: treatment device design guideline'
Shutdown requests
If you need to shut down a part of the public network, you must get approval from us first.