With such a range of sources, there are also a wide variety of treatment processes in use with each plant designed to tackle the problems encountered or likely to be encountered from its sources. Water from our Mendip sources, including the reservoirs, is generally of a good original quality and requires less treatment than water from the Sharpness Canal, which is fed from the River Severn. Typically, Mendip water is treated with microstrainers, slow sand filtration and chlorination. Click here to see how we treat reservoir water.
Underground sources - boreholes, wells and springs, normally only need chlorination as they start out with the best original raw water quality of the lot.
To deal with the more complex problems encountered from our canal source we have built some of the most advanced treatment plants in the country at Littleton and Purton. Here more sophisticated methods like clarification and ozone disinfection, coupled with granular activated carbon filtration are used.
Click below to see more information on:
Science of water (pdf)
Activated carbon (pdf)
Overall treatment information (pdf) |
