Dormer Construction

Kaiapoi Sewer Pump Stations

Kaiapoi Sewer Pump Stations LOCATION Kaiapoi - Canterbury
CLIENT Waimakariri District Council
VALUE $1.3 million
PROJECT START January 2016
COMPLETION August 2016


Dormer Construction won the invited tender to build 2 sewer pump stations in Kaiapoi for the Waimakariri District Council.

This consisted of one pump station in Sneyd Street with the wet well and valve chamber that needed to be constructed in the footpath, and the electrical cabinet in a separate enclosure behind the foot path.

The critical items for this installation was locating the lids inside the existing kerb line and matching the footpath level, while keeping the inconvenience to the residents to a minimum.

The second pump station was in Charles Street, this was a relatively complex build, with a architecturally designed Switch Board Building. The building had exposed aggregate concrete panels with purple heart timber battens attached in the resemblance of the Waimakariri River tributaries.

There were very high water tables that where required to dewater for the duration of the works. That included installing 2100 Diameter wet wells at 6.5m deep, along with associated valuing, rising mains and electrical components.



The issues that needed to be addressed was to work with the residents to keep interruption to them to a minimum.

Health and Safety

No personal harm incidents accrued during the construction of both pump stations.


The customer had no issues with the construction programme timing.


The contract was under budget, with no major variations required to complete either pump station.