Guidance on duct colours and working around underground services is available from the Guide for Safety with Underground Services. The Guide for Safety with Underground Services is published by the Electricity Engineers Association of NZ Inc and is available from the Department of Labour website.
Energy
- Orion (electricity)
- Transpower (electricity)
- Mainpower (electricity)
- Rockgas (gas)
- Ongas (gas)
- Liquigas Ltd (trunk line Lyttelton to Woolston)
- Mobil (trunk line Lyttelton to Woolston).
Telecommunications
- Telstraclear
- Telecom
- Christchurch City Network Ltd
- Vodafone
- NZ Communications
- University of Canterbury (Ilam Rd only)
- Woosh
- 2 Degrees.
Water/stormwater/sewer
- Christchurch City Council
Other Christchurch City Council infrastructure
- Transport infrastructure (bus shelter/RTI)
- Traffic signals and cables
- Traffic cameras and cables
- Crime prevention cameras and cables
- Water irrigation reticulation and cables.
Other infrastructure
- Linz (offsetting of survey marks)
