WastewaterCentral Interceptor
A 15-kilometre gravity trunk sewer and pump station network reducing overflows across central Auckland.
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Newtown Creek CSO Storage Tunnel
A 2.6-mile deep rock CSO storage tunnel with six shafts, cutting overflow events by design.
Deep rock storage tunnelling in a dense, heavily contaminated industrial setting.
The tunnel provides in-line storage to capture combined sewer overflows during storm events, treating up to 106 million gallons per day of peak flow.
Scope of work
- Tunnels & Underground Engineering
- Geotechnical Engineering
- Construction Management
Project facts
- Length
- 2.6 miles
- Shafts
- 6
- Storage
- CSO capture
- Completion
- 2020
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WastewaterCentral Interceptor project details
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