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- Water Treatment
The process of taking rainfall and turning it into potable (drinkable) water that flows from your tap appears deceptively simple. When treating stream water supplies and stored water intended for human consumption, it is absolutely vital to ensure that the final product is safe, wholesome and conforms to the latest United Kingdom drinking water standards.
Rainwater may appear to be clean, but by the time it has absorbed or dissolved a host of compounds, dirt and dust from the air, run off buildings, streets and across muddy fields, it is far from pure. The following describes the basic principles of water treatment, which takes you through the steps of collecting rainfall, storing it, treating it, and distributing it to our customers.
You can view the conventional water treatment process using our interactive graphic below, this graphic illustrates our Juas Water Treatment Works, but this process is also used at Kings Mills Water Treatment Works.
Juas Water Treatment Works
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This infographic is optimised for use on larger screens but you can still explore the treatment works by tapping on the individual elements in the illustration below. For an optimal experience, we recommend browsing with a larger screen.
Washwater Recovery Tanks
Particles captured in the filter beds are periodically washed out, this washwater, containing the particles, is then gravity fed into three of the site's washwater tanks, where the sediment settles out to form a layer of sludge. The sludge is then pumped into the sewer network and the remaining water returned to the quarry for future use.
High Lift Pump House
Home to the pumps which feed treated water into our distribution network. Clean water from the filter beds flows to the high lift house where it is treated with ultraviolet light for disinfection and a final dose of chlorine. This ensures wholesome water quality is maintained as it travels through the distribution network to customers' homes. Water samples are taken on a regular basis at this point.
These treated water storage tanks provide a simple way to control constant pressures within the distribution network during fluctuating water demands during the day and also provide a short-term supply facility in times of emergency breakdown of pumps or other treatment equipment.
Random samples are taken from our customers' homes throughout the year to ensure that water quality meets our standards. 1236 individual tests were conducted in 2017.