Unit Code Unit Title
PLB-05 Install and Maintain Water Supply Systems

Nominal Hours: 35
Unit Descriptor:
Covers installation, testing, and maintenance of potable water supply systems.

Elements | Performance Criteria

Elements Performance Criteria
1. Plan water supply installation 1.1 Interpret plans and codes.
1.2 Select pipes, valves, and fittings.
1.3 Lay out system for installation.
2. Install water supply systems 2.1 Cut, join, and fit pipes and fittings.
2.2 Install valves, meters, and backflow prevention.
2.3 Ensure correct pressure and support.
3. Test and maintain systems 3.1 Perform pressure and flow tests.
3.2 Inspect for leaks, corrosion, or faults.
3.3 Repair or replace components as needed.

Range of Variables

Variables Range
Materials Copper, PEX, CPVC, galvanized steel, HDPE.
Fittings Valves, unions, elbows, tees, meters, backflow devices.
Testing Pressure, flow, chlorination, visual inspection.

Evidence Guide

Area Details
1. Critical aspects of competency Installs, tests, and maintains water supply systems to code.
2. Underpinning knowledge Water supply principles, materials, installation standards, testing.
3. Underpinning Skills Pipe joining, valve installation, pressure testing, troubleshooting.
4. Underpinning attitudes Quality, compliance, responsibility, safety.
5. Resource Implications Water supply materials, tools, test equipment, plans.
6. Methods of Assessment Practical demonstration, inspection, questioning, supervisor feedback.
7. Context of Assessment Real/simulated site with water supply installation and testing.

Foundation skills

Skills DESCRIPTION
Numeracy Measure, calculate flow/pressure, pipe lengths.
Problem Solving Diagnose and repair leaks or pressure issues.
Planning/Organizing Sequence installation and testing tasks.

Target Audience

Target Audience Description
Plumbing apprentices, workers Individuals installing and maintaining water supply systems.

Recognition of Prior Learning (RPL)

RPL Available Yes

Pre-Requisit

Pre-Requisite None