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NCO Level 2 Conversion Gas to Water Main Layer CABWI


The CABWI Level 2 Diploma in Network Construction Operations (Water) - Main Layer allows the leaner to demonstrate the skills and knowledge required by main layers working in the water industry, whose role it is to install water mains on the distribution network.

This competence-based qualification covers the underpinning knowledge and practical skills required to install water mains on the distribution network. The qualification covers the technical network construction skills required for main layer, including health, safety and hygiene, and also includes requirements relating to working effectively and maintaining effective working relationships. Learners must produce workplace evidence to show that they can meet the assessment requirements consistently over time.


2 days - training room/practical training.
1 day - work based assessment.

Portfolio of evidence to be carried out by the candidate with support from the trainer.

Max Number


Suitable For

The qualification can be used to up-skill existing staff. It is also one of the Level 2 qualifications that may be taken by apprentices working on the SASE apprenticeship framework for The Water Industry.


  • All learners must complete the following 3 mandatory units:

  • Maintain a safe and secure working environment in water network construction.
  • Joint materials by mechanical means on water network construction.
  • Install water mains up to 150mm nominal bore or 180mm polyethylene.

    Learners may take the following units, but they do not contribute to the achievement to the full certificate:

  • Reinstate excavation and pavement surfaces after utility network construction operations.
  • Joint materials by butt fusion processes between 180mm and 315mm for utilities network construction.
  • Joint materials by butt fusion processes above 315mm for utilities network construction.
  • Install water mains from 150mm-300mm nominal bore or 180mm-315mm polyethylene.
  • Install water mains above 300mm nominal bore or 315mm polyethylene.
  • Conduct pressure and soundness testing or water network engineering products or assets.
  • Restore water network components to operational condition by repair.


There are no entry requirements for this qualification. However, as there is a requirement for the learners to provide evidence from workplace activities, the learner must be working in the water industry and undertaking main laying activities on a regular basis.

Candidates must hold an NCO Level 2 Main Layer in Gas to be eligible to convert to a water qualification.

Teaching Methods

  • Teaching methods include:

  • Theoretical and practical training.
  • Assessment (conducted using a portfolio of evidence and on-site assessments).

Accreditation Options

  • CABWI 2


Upon successful completion of this course, candidates will receive a CABWI certificate.

Course Dates

There are currently no dates set for this course, for more information please contact us or call our friendly sales team on 0330 0948 424

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