Water Restriction Level 1 is now in effect across Wellington City, Lower Hutt and Porirua, joining Upper Hutt and South Wairarapa who are in Level 1 year-round.

Water Restriction Level 1 asks people to use sprinklers every second day.

If you live in an even numbered house, you can use sprinklers or irrigation systems on even numbered days between 6-8am and 7-9pm. If you live in an odd numbered house, the same rules apply for odd numbered days.

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Your Water / The Network / Wastewater / Wastewater Treatment Plants / Moa Point Wastewater Treatment Plant

Moa Point Wastewater Treatment Plant

At the Moa Point Treatment Plant, wastewater travels through a series of screens, tanks, bioreactors, clarifiers and ultraviolet treatments before being discharged as liquid into Cook Strait.The plant has capacity to discharge up to 260,000 cubic metres of wastewater per day.
Each day the plant cleans and disinfects wastewater from about 180,000 people. It treats an average 850 litres of water (or about three standard bathtubs) every second and up to 3,000 litres a second during heavy rainfall.

Resource consents

Resource consent reports

Annual Reports: 

Moa Point Wastewater Treatment Plant Annual Resource Consents Report 2024-2025 

Carey's Gully Southern Landfill Annual Resource Consents Report 2024-2025 

Moa Point Wastewater Treatment Plant Annual Resource Consents Report 2023-2024 

Moa Point Wastewater Treatment Plant Annual Resource Consents Report 2022-2023

Moa Point Wastewater Treatment Plant, GWRC Compliance Monitoring Report 2022 - 2023

Careys Gully Southern Landfill Annual Resource Consents Report 2021/2022

Moa Point Wastewater Treatment Plant Annual Resource Consents Report 2021/2022

Moa Point Wastewater Treatment Plant Annual Resource Consents 2020/2021

Moa Point Wastewater Treatment Plant Annual Resource Consents 2019/2020

 

Quarterly Reports 

Moa Point Wastewater Treatment - January - March 2025 - Quarterly Resource Consents Report

Moa point Wastewater Treatment Plant October - December 2024 - Quarterly Resource Consents Report

Moa Point Wastewater Treatment Plant July - September 2024 - Quarterly Resource Consents Report

Moa Point Wastewater Treatment Plant January March 2023 Quarterly Resource Consents Report


Consent Compliance Reports 

Moa Point Wastewater Treatment Plant - Compliance Monitoring Report 2023 - 2024

Moa Point Wastewater Treatment Plant - Compliance Monitoring Report 2022 - 2023

Moa Point Wastewater Treatment Plant - Compliance Monitoring Report 2021 2022

Appendices 

Appendix IV - Moa Point Outfall CCE Inspection report 2025.pdf

Appendix IV - Moa Point Outfall Diving Inspection report 2025.pdf

Appendix V - Moa Pt Ambient Microbe Monitoring August 2024 Issue.pdf

Appendix V - Moa Pt Ambient Microbe Monitoring February 2025 Issue.pdf

Appendix VI - Moa Pt WWTP Smoke Test November 2024 Issue.pdf

Appendix VII - Moa Point Bypass Flow sample results Cond.16 2024/25.pdf

Appendix VIII - Moa Point Shoreline sampling post discharge Cond.10 2024/25.pdf

Appendices - Moa Point Wastewater Treatment Plant Annual Resource Consent Report 2023/2024 - 

Plant performance


Current Status: Non-compliant (with noted issue)
Period: August 2025

 

Commentary​

The plant is compliant for effluent quality, but was non-compliant for one air quality measure.

Discharges

No discharges in August.

Odour complaints

There was one odour complaint in August relating to the Southern Landfill site and Careys Gully Sludge Dewatering
plant.

Items of significance: 

Odour Management System 

Investigations continue into the decreased performance of the chemical scrubber system. The plant was non-compliant for Total Reduced Sulphur (TRS) in August and investigations continue. The team are actively working with overseas odour experts to help identify the root cause of the issue. Previously reported adjustments to operational set points of the scrubber system have not acheived desired performance outcomes, and the next set of actions to restore reliable performance are being implemented.

Read the full August 2025 Moa Point wastewater treatment plant monthly performance report

Public meeting resources