Introduction

Some of the principles of distribution and delivery of water in urban areas were explained in Study Session 1. Water from a treatment plant is conveyed in transmission mains to service reservoirs, and then in distribution mains that deliver it to consumers.

In this study session you look at this system again and consider the causes and effects of leakage and the ways it can be detected. You will also consider illegal connections to the water supply system, and the impacts that they have.