How Does Water Get To Your House?

If you work in the water engineering business, you should be familiar with the expansion joint principle because this will help do your job properly. In simple English, this joint is designed to safely absorb expansion and contraction of materials induced by temperature. This is why it is used in piping and other aspects of water engineering. In the UK, engineers and other experts are responsible for providing tap water to users across the land. The process of water treatment and piping is complicated but it is also exciting. The right experts transform ground water and surface water to safe water and this is what you get when you turn on your taps. 

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Sources of Tap Water in the UK

Anytime you turn on your tap in the UK, the water you get comes from two sources. These are ground water and surface water. Seawater is too salty and very difficult to purify. For this reason, the best option is river water. Making surface water or ground water safe for drinking involves the processes below.

Water Purification Processes

Surface water is full of impurities and this is why it must be properly treated before it is piped to homes and offices. The first step is to move the water from the river to the water treatment plant. This is done using special pipes to move the river water to treatment plant. Once the water gets there, the treatment begins. 


Ground water or surface is usually screened before the actual purification process. Water screening is important because the aim is to keep out large unwanted materials that may clog or disrupt the process of purification. 

Pre-Chlorination and Aeration

River water is full of biological organisms like algae. The first step in the treatment process is to arrest biological growth and get rid of algae and other organisms in the water. The next step is the aeration process. This simply means removing dissolved iron and other chemical substances in the water. 

Coagulation and Sedimentation

Before the filtration process, exerts in water purification use the two processes above to make the water ready for filtration. Coagulant aids such as polyelectrolytes are used to improve coagulation. Solids trapped in the floc are removed using a process called sedimentation. 


Water filtration is a critical part of the water purification process. The water is pumped through many different filters and these filters remove particles until the water is almost perfectly clean. After this process, the water is ready for disinfection. 


This is the final step in the water purification process. The filtered water is moved into huge closed tanks where chemicals like chlorine are used to kill any bacteria or pathogens that survived the filtration process. In some cases, ultra-violet light (UV), reverse osmosis and ultra filtration are use to disinfect the water. 

Piping the Water

Now, all the water purification processes are complete so the water is officially safe for consumption and domestic use. However, quality control experts in the industry must certify the water safe before it is piped to the consumer. 

Final Word

Water purification in the UK is challenging but the experts in the water purification industry always go the extra mile to ensure consumers get safe and clean water.