South Waikato District Council Watermain Renewal
Tokoroa, Waikato


Civtec was awarded a contract from South Waikato District Council to install replacement watermains across four residential and commercial sites in Tokoroa.


Civtec installed 2.6km of Polyethylene Pipe to replace degraded watermains in a large section of the township using a variety of methods including Horizontal Directional Drilling, and open trenching.

Pipe joints were accomplished using modern pipe welding technology including Electrofusion and Butt Welding, and tie-ins completed with household laterals and existing bulk water reticulation. After completing the installation, water quality was tested to ensure conformance with regional technical infrastructure specifications.


Tokoroa is known for Rhyolite, a volcanic rock that is difficult to drill through.

The Civtec drill teams encountered significant levels of Rhyolite on this project but continued to make good progress by establishing systems to investigate and understand ground conditions well ahead of the drill crews. This allowed alternative methodologies to be enacted without impacting the project timeline.

The initial COVID-19 lockdown delayed the commencement of this project. Once the alert level restrictions permitted Civtec crews to be onsite, they followed the comprehensive COVID-19 and PPE protocols developed by the Civtec Health and Safety team to ensure the safety of our people, the South Waikato District Council team and the local community of Tokoroa.

civtec competencies employed:


Service Location using Hydroexcavation

Horizontal Directional Drilling, 25mm to 180mm dia

PE Pipe installation – 25mm to 180mm Dia

Electrofusion Butt Welding

Water Reticulation and Tie-in works

GPS as built

Public Communication and Liaison
Metres PE Pipe Installed
mm Drilling Diameter
Installation Sites
Days Delivery Time


This original project was delivered within the budget set out by the client, and within the revised delivery period adjusted for the Covid-19 lock down, an impressive feat when considered against the ground conditions encountered and the logistical challenges presented by the global pandemic.