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Read through the material below, then test your understanding.
Module Lessons
Cold Water
Incoming Mains: Communication vs. Supply Pipes
Installation Depths and Building Entry
Direct Cold Water Systems
Indirect Cold Water Systems
Siting and Installing Storage Cisterns
Float-Operated Valves and Overflows
Principles of Backflow
Terminal Fittings and Taps
Non-Mechanical Backflow Prevention (Air Gaps)
Water Treatment and Distribution
Mechanical Backflow Prevention Valves
Commissioning: Testing and Flushing
Lesson Overview
Before water reaches consumer taps, it is collected from natural sources, treated to ensure it is wholesome, and distributed through mains networks. Understanding treatment stages and distribution principles is essential for every plumbing professional.
Learning Objectives
Identify the common surface and underground sources of water used throughout the UK.
Explain the key stages of municipal water treatment: sedimentation, filtration, sterilisation, and aeration.
Describe how treated wholesome water is distributed to buildings using gravity and pumped networks.
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