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Information for suppliers and contractors

Supply chain, procurement, purchasing and payment information for suppliers, contractors and consultants.

We value the work our suppliers play in helping us to deliver safe and efficient water and wastewater services to our communities.

We’re committed to maintaining a responsible, inclusive, fair, safe and sustainable procurement process that delivers value for Auckland’s people.

This page gives you essential information and resources so you can work with us.

Forward works programme for infrastructure projects

We regularly publish our forward works programme for infrastructure projects to let our panel members and the broader construction industry know what projects are coming up. It includes work up to the value of $300 million. Large-scale programmes of work, incident recovery work and our targeted asset renewal programme are not included in this document.

Please note the forward works programme is subject to change. Delivery timeframes and project scope can shift in response to changing priorities, stakeholder input and technical development. We have prepared a project key milestone document to help you to understand milestones within each project phase.

Forward works programme November 2025

Project key milestones

Info for new and existing suppliers

Supplier onboarding

To become a Watercare supplier, you’ll need to complete the supplier information form provided by your Watercare contact.

It includes all the information we need to add you to our systems.

With all the necessary information and proof of your bank account, we’ll get you set up as quickly as possible.


Who we work with

These lists are to inform the wider supplier market about who we do business with.

For smaller businesses, we hope the lists will indicate possible sub-contractor opportunities.

Recent contracts

Our recent contract report lists all the contracts that we have awarded in the last six months.

Supplier spend

The following monthly report lists the total spend per supplier (across all contracts and purchase orders) for the previous 12 months (where the total is greater than $1m).


Detailed information about contracts and supplier spend may be commercially confidential. Although every care is taken to ensure that information provided is accurate, we accept no responsibility for any errors or omissions.

Health and safety pre-qualification

Watercare utilses the Tōtika pre-qualification system we prefer all supplies undertaking construction works, maintenance and engineering services to be Tōtika qualified.

e-Tenders

We use e-tendering to simplify and speed up the tendering process. We publish our tenders on the NZ Government Electronic Tender Service (GETS). Registration is free.

As a registered supplier you can:

  • Receive emails about our new public tenders
  • Download tender documents
  • Take part in forums to seek clarification of questions
  • Upload responses to our tenders

Note: We generally do not provide hard-copy tender documents or accept hard-copy responses to tenders.

Unsolicited proposals

From time to time, suppliers may wish to approach us with a proposal to meet a perceived need, without being asked to do so. This is considered an unsolicited proposal.

We encourage suppliers to put forward good ideas, and we will treat these in a way that is transparent and fair to everyone.

We consider ideas that are:

  • Unique
  • Innovative
  • Aligned with our plans, objectives and strategic priorities
  • Detailed enough for us to assess their merit.

To submit a proposal, ask a question or learn more about our supply chain processes, please email [email protected]

Probity

Do you have a probity concern? Let us know.

We consider probity of utmost importance.

When conducting supply chain activities and at all stages throughout the procurement process, it is everyone's responsibility to ensure probity is upheld.

Any supplier who has a probity concern may contact our head of internal audit by emailing [email protected]

Alternatively, suppliers are welcome to use our confidential whistleblower service which is administered by PWC.

Click here to access the whistleblowing portal.

Alternatively phone or email PWC at 0800 177 792 and [email protected]

Info on purchase/contract orders, invoices and payments

Purchase/contract orders
  • All goods/services/works provided to us must be supported by a valid purchase/contract order. Once we have approved a purchase/contract order, we will send you the correct purchase/contract order number and line number. You must include this in your invoice.
  • Valid purchase/contract order numbers are 9 digits long and start with a ‘4’.
  • If you have not received your number, please contact the person you have been working with at Watercare. If your details are incorrect on the purchase/contract order or you wish to change your bank account details, please email [email protected].

Standard terms of purchase

Our purchase order standard terms and conditions contain the default terms and conditions that apply to all purchase orders created by us, unless otherwise agreed in a contract or within the purchase order.

Read our purchase order standard terms and conditions.

Invoices

Please send your invoices punctually. We need to receive invoices for the previous month by 5th of the following month, to allow time for processing.

Note:  Invoices should be dated for the month that the goods/services/works were supplied. For example, an invoice for services carried out in the month of January should be dated 31 January at the latest.

Here’s how you can avoid delays:

  • You must include an approved purchase/contract order number and line number on your invoice (we cannot pay invoices and may return invoices without this number)
  • ​​You can send your Watercare contact a copy of the invoice (mark it clearly with the word ‘copy’).

Your invoice should also contain:

  • The words ‘Tax Invoice’ in a prominent place
  • Your name and GST number
  • The date of issue

Our name and address: Watercare Services Limited, Private Bag 92521

Victoria Street West, Auckland 1142

  • A description of your goods/services/works
  • The quantity or volume of your goods/services/works

How to send your invoice

  • If requested, please send a copy invoice to your Watercare contact.
  • If you are unsure whether we have received your invoice, please contact us at [email protected]

Payment

We will make payment via an electronic bank transfer into your nominated bank account.

We pay invoices on the 20th of the month following the date of the invoice unless we set other terms on your purchase/contract order.

For example, for monthly services provided in January:

  • An invoice dated 31 January and received by 5 February will be paid on 20 February
  • An invoice dated 1 February and received by 5 February will be paid on 20 March

Note: When the 20th of the month does not fall on a normal business day, payment will be made on the last business day prior to the 20th.

Credit notes

Please send credit notes to[email protected] and clearly state ‘credit note’ in the subject line.

If requested, please send a copy credit note to your Watercare contact.

If you are unsure whether we have received your credit note, please contact us at [email protected].

Statements

Statements, if you issue them, should also be sent to [email protected] and have ‘statement’ written in the subject line.


Get in touch 

If you have questions about our supply chain and procurement processes, please email: [email protected].