A plumber's training at AbleSkills on the City & Guilds Technical Certificate NVQ 6129 Level 2 will provide a broad but detailed background to all aspects of the physical properties of water and how it behaves under a variety of conditions. It will be important for a trainee plumber to understand the sources of water, how it is collected, treated and supplied to the consumer, all the way to when it emerges, under pressure from the householder's tap!It is of vital importance to fully understand the entire water distribution process - and the key regulations involved - so that a plumber can advise a householder and know how to deal with any number of external problems that might impact on the domestic supply. This particularly applies with initiatives being developed to conserve energy efficiently, save water wastage and the likelihood of the rollout of water meter installation across the country.The ongoing development of a major construction upgrade in London's daily water supply represents news, of which, plumber should be aware. Keeping informed is useful, especially if there are changes that might affect future working practices or regulations .The Thames Water Ring Main (TWRM) is a major part of London's water supply infrastructure that consists of an approximately 50 mile system of mostly 100" concrete pipelines , forming a complete ring around the capital. The giant circular water main is 45 metres under London and is used to transfer 1,300 million litres of safe drinkable water from water treatment works in the Thames and River Lee catchments areas to distribution throughout London, every single day!Work to extend Britain's longest tunnel hit a major milestone in May of this year when engineers broke through into the original shaft. The initial ring was constructed between 1988 and 1993. As of 2006, two extensions are under construction to extend the Ring Main to the north and south of the River Thames at a cost of ?