Huia Water Treatment Plant replacement project
We are planning to build a water treatment plant and two storage reservoirs in Waima.
Duration
2027–2034
Location
Woodlands Park Road, Waima (Titirangi)
Status
Planning
The latest
We have been granted resource consent to build a new water treatment plant on land at the corner of Woodlands Park Road and Manuka Road, Waima. The new plant will replace the adjacent ageing Huia Water Treatment Plant which treats 20 per cent of Auckland’s water and at over 100 years old is near the end of its operational life. The new reservoirs will increase the volume of water stored locally, improving the resilience of the wider water network and accommodating daily demand fluctuations. Our network is served by five treatment plants, numerous reservoirs and pump stations, and a highly connected network of pipes. It means that if one treatment plant has an operational issue, the other treatment plants can help meet Auckland’s water needs. The Huia Water Treatment Plant replacement project is a vital part of this network. The new plant will have more advanced treatment processes and will be easier to maintain than the current plant. It will be carefully laid out to ensure staff can access each treatment process safely and easily.
Overview
Resource consents
The resource consent for the Huia Water Treatment Plant replacement project was granted just before Christmas 2023. This is required for us to build a new water treatment plant in Waima to replace the original 95-year-old plant. The conditions of our consent are focused on mitigating adverse effects on the community and the environment, and cover issues like traffic management, noise, hours of operation, and in particular, stringent conditions aimed to prevent any transfer of kauri dieback. Concept design for the water treatment plant is underway. At this stage, we hope to begin construction in 2027.
- Click here for the decision following the hearing of an application for resource consent under the Resource Management Act 1991
Parau disposal site consent
A further consent is required for disposing of soil at the existing Parau sludge disposal site. Options for local disposal sites were investigated and the Parau site has been selected as the most suitable option due to its proximity, and because Phytophthora agathidicida (kauri dieback) infection already appeared to be present at the fill site. Disposing of surplus excavated material to the Parau sludge disposal site also reduces the quantity of material that needs to be transported through Titirangi Village and surrounding communities.
- Click here for the map of the route to the Parau disposal site. This consent has now been granted in September 2024.
- Click here for more information about the Huia WTP spoil disposal at Parau consent.
- Click here for a copy of the consent decision.
Comprehensive sampling for Kauri dieback
As part of the resource consent process, we commissioned the most comprehensive sampling for Kauri dieback that has been undertaken in Aotearoa. The sampling consisted of over 995 samples and Kauri dieback was found on the site. The report on the sampling results is available here. As a result of the survey, we have refined the methodology to carry out the site works to minimise any risk of movement of Kauri Dieback from the site.
Helpful resources
Helpful resources
Consent documentsHuia Water Treatment Plant replacement project assessment of environmental effects
BioSense kauri dieback disease surveillance report - November 2020
Appendix A: Certificates of Title
Appendix B: Legal advice regarding resource consent and OPW process
Appendix C: Water treatment plant and reservoirs site layout development report
Appendix D1: Consenting phase site layout development (GHD)
Appendix D2: Assessment of storage required and site selection (Beca)
Appendix D3: Reservoirs' storage, location and layout assessment
Appendix E: Indicative design drawings
Appendix F: Indicative construction methodology report
Appendix G: Stormwater, erosion and sediment control report
Appendix H: Groundwater and settlement report
Appendix H: Appendum to groundwater report
Appendix I: Preliminary land stability assessment
Appendix I: Appendum to land stability report
Appendix J: Preliminary site investigation - final
Appendix K: Site management plan
Appendix L: Ecological assessment
Appendix M: Traffic and transport assessment
Appendix N: Construction, noise and vibration assessment
Appendix O: Permitted activity standards assessment
Appendix P: Objectives and policies assessment
Huia Water Treatment Plant replacement project assessment of environmental effects
BioSense kauri dieback disease surveillance report - November 2020
Appendix A: Certificates of Title
Appendix B: Legal advice regarding resource consent and OPW process
Appendix C: Water treatment plant and reservoirs site layout development report
Appendix D1: Consenting phase site layout development (GHD)
Appendix D2: Assessment of storage required and site selection (Beca)
Appendix D3: Reservoirs' storage, location and layout assessment
Appendix E: Indicative design drawings
Appendix F: Indicative construction methodology report
Appendix G: Stormwater, erosion and sediment control report
Appendix H: Groundwater and settlement report
Appendix H: Appendum to groundwater report
Appendix I: Preliminary land stability assessment
Appendix I: Appendum to land stability report
Appendix J: Preliminary site investigation - final
Appendix K: Site management plan
Appendix L: Ecological assessment
Appendix M: Traffic and transport assessment
Appendix N: Construction, noise and vibration assessment
Appendix O: Permitted activity standards assessment
Appendix P: Objectives and policies assessment
Management plans
Early documentsAssessment of Ecological Values - Boffa Miskell (5 July 2018)
S. Myers Review of Huia Site Ecology Study (July 2018)
Manuka Road Waima ecology presentation to the CLG (19 February 2018)
Upgrade Implementation Strategy
Tonkin & Taylor Ltd Report on long list options
GHD shortlist site development report
Tonkin and Taylor Huia Water Treatment Plant Ecological Assessment 2012
Proposed site options (February 2017)
Traffic technical note (May 2017)
Beca Huia site selection short-list cost estimate report (13 September 2016)
Final site alternatives shortlist report (18 June 2017)
GHD draft addendum to shortlist site development report 2016
Huia site constructability comparison assessment (draft)
Huia site selection ancillary structures summary report
Huia WTP replacement historic heritage assessment
Huia WTP site selection principles
Operations review of replacement alternatives
Shortlist options analysis: ecological effects
Assessment of Ecological Values - Boffa Miskell (5 July 2018)
S. Myers Review of Huia Site Ecology Study (July 2018)
Manuka Road Waima ecology presentation to the CLG (19 February 2018)
Upgrade Implementation Strategy
Tonkin & Taylor Ltd Report on long list options
GHD shortlist site development report
Tonkin and Taylor Huia Water Treatment Plant Ecological Assessment 2012
Proposed site options (February 2017)
Traffic technical note (May 2017)
Beca Huia site selection short-list cost estimate report (13 September 2016)
Final site alternatives shortlist report (18 June 2017)
GHD draft addendum to shortlist site development report 2016
Huia site constructability comparison assessment (draft)
Huia site selection ancillary structures summary report
Huia WTP replacement historic heritage assessment
Huia WTP site selection principles
Operations review of replacement alternatives
Shortlist options analysis: ecological effects
Map of the site
Engaging with the community
We recognise the significance of the proposed construction site and understand why our project is of public interest. For this reason, we are taking great care to engage with the community through numerous channels. Additionally, as a requirement of the consent, a Community Liaison Group (CLG) has been established to share information on the project and seek feedback on management plans for the project.
Community Liaison Group