Lyttelton Harbour Wastewater Project 

Kia ora from the Lyttelton Harbour Wastewater project team.
There's a lot going on at our different worksites around the harbour and we'll continue this momentum in the lead-up to Christmas. We're almost finished upgrading the Governors Bay pump station and have re-opened the walking track to the public. The Simeon Quay pump station is almost built and over the hill, we're putting the finishing touches to the 4.5 km Heathcote Valley pipeline. We'll test and commission this new section of pipeline once work on the Simeon Quay pump station is complete.
Our contractors will hit pause on the Lyttelton Harbour Wastewater works for four weeks from the beginning of December until the start of January. We'll stop work, tidy up all our work areas and make them safe for the holiday period.
On behalf of the team, thank you for your patience while we complete this project.

Finish line in sight for Lyttelton Harbour wastewater project

A $53 million wastewater project to improve the health of Whakaraupō/Lyttelton Harbour is a step closer to completion.  A lot of work has been done above and below the ground to connect the Lyttelton Harbour's wastewater to the main Christchurch system.

Four new pump stations have been built around the harbour, to serve as powerhouses to pump all of the Lyttelton Harbour communities’ wastewater over the hill to the main treatment plant in Bromley.

More than five kilometres of submarine pipeline will carry wastewater from Diamond Harbour and Governors Bay to Cashin Quay in Lyttelton, before being piped to the Simeon Quay pump station.

From here, wastewater will be pumped through the Lyttelton tunnel and through the newly constructed 4.5 kilometre Heathcote Valley pipeline, to Bromley.

An update on Simeon Quay 

All the electrical works have been completed and fully tested. Next, we need to finish pressure testing the pipes that connect the Simeon Quay pump station to Cashin Quay and the Lyttelton Tunnel. This requires us to test in sections and will means that at times we will dig down to place the pressure testing equipment on the pipeline. These pipes are tested to a pressure greater than what we will operate at the system at, so that we know that it will last for the full life of the station. The pressure vessels and back-up generator have been installed and will also be undergoing testing to ensure they are fit for purpose. The retaining walls and adjustment to the walking track are almost complete and we will soon be placing asphalt on the pump station accessway.

Governors Bay walking track open again

Good news, the Governors Bay foreshore track has re-opened to the public. We've finished laying the pipeline and electrical cable and have placed  a layer of Teddington chip over the trench to restore it to its original condition.
Please note the temporary gate installed at the bridge is still in place. Jetty Road is still closed to public vehicles but can be accessed by walking. We will have ongoing works in the near future to install the buffer tanks at the new pump station.

An update on the Heathcote Valley pipeline

Work on the 4.5km Heathcote Valley pipeline is almost complete. This underground pipeline runs through the Heathcote Valley to connect Lyttelton Harbour's wastewater to the existing pump station in Woolston's Alport Place.

The final design checks are underway for the new section where the pipe transitions from a pressure pipe to a gravity pipe. The works in this section will not impact on the public as they are on the land owned by NZ Transport Agency  Whaka Kotahi.

Alport Place

The concrete chamber to be installed at Alport Place is close to being ready for transport to site. Soon the team will start to use dewatering equipment to lower the ground water table to allow safer and easier digging. Once this is complete and the base of the excavation is compacted, we'll use a crane to lift the chamber into place, then install the connecting pipework. We also need to construct an electrical cabinet to house the controls for automatically operating the new valves.

Once the chamber is in place, the internal fit out will be completed in two stages. Stage one will allow the pipeline to be commissioned, while stage two involves installing a bespoke valve that controls the stop and start of wastewater through the Heathcote Valley pipeline, under the Heathcote river, and into the pump station at Alport Place.  

Port Hills Road watermain replacement

We've finished replacing the watermain and submains along the 600 meter section of Port Hills Rd between Mauger Drive and Martindales Road. We've checked the road strength and are in conversations with our contractor about the refurbishment and reseal of this section of road. We're also planning to upgrade the kerb and channel along this section. Once we have confirmed the dates for these works, we will providing start work notices to keep residents informed.

Contact us

If you have any concerns about our work sites, you can ring Fulton Hogan on 027 604 9335 or 027 616 3929, or contact Council on 0800 800 169 to report any issues.