Water contamination is serious and needs to be resolved immediately. There is a name for a common way for water to become contaminated and that is ‘back flow’. The usual way for water to enter a home is under a great deal of pressure. The pressure of incoming water to a property is very high. But of course, this not only speeds up the filling of your bath or allows good garden watering power, it also guarantees that water is only flowing in one direction and that is from the hosepipe straight onto the lawn. As long as the system is arranged in this kind of way there is no chance that it can become contaminated. However if the pressure drops off suddenly it will be a different story. Abbey Wood Plumbers tradesmen are aware of contamination issues.An Example of Water Contamination:There has been an accident with the mains pipework a few miles away. The water supply to the house is interrupted. The homeowner was using a hose at the time in the garden. The hose gets thrown down on the grass, to investigate. This water on your garden suddenly finds itself being dragged back into the empty hose, and after a short time, it will find the mains cold water supply. The water is now mixing with many horrible things, including pesticides, plant food and goodness knows what. The fault that results in no water is far away, however the contamination is down to the homeowner, as they have just tried to poison nearly half the shire. Our Water Regulations state that you must fit devices that will stop any chance of ‘back flow’. A Thamesmead Plumber fits all valves. The example above would not have happened had a device called a ‘double check’ valve been fitted to the outside tap. It is a simple bit of kit that only allows water to flow through it one way. With this device fitted it wouldn’t matter as your tap will not let the water flow back into the cold water mains. Job done.