Pump stations
The NRSBU operates four pump stations, three of these being very large and Wakatu being small (in comparison to the other three). There are linkages between pump stations ie Wakatu pumps into the Richmond to Saxton rising main, the Saxton acts as a booster for the Richmond/Wakatu pump stations and the Saxton and Airport have a common rising main across the estuary to Bells Island. All pump stations have SCADA and flow monitoring installed.
Pump station details
| Name | Location | Residual Life (years) at 2007 | Storage Capacity ADWF As at 2004 | Pump Capacity - Lts/sec * | |
|---|---|---|---|---|---|
| Duty Pumps | Pump 3 | ||||
| Richmond | Beach Rd | 1 - 55 | 1.8hrs | 176 l/s | 389/s |
| Saxton | Saxton Rd | 1 - 55 | 1hr | 192 l/s | 312/s |
| Airport | Stoke | 1 - 55 | 1.2hrs | 183 l/s | 458/s |
| Wakatu | Wakatu Industrial estate | 7 - 76 | 4hrs | 40 l/s | - |
* Approximate maximum values
