Manhole cover in the car park of the White Hart being lifted by storm water. (Photo courtesy of David Jones) |
Although the increase in the volume of sewage may not be great (around 10%), there is already a problem with manhole covers being lifted at times of heavy rain. This is because there is a linkage somewhere in the village between storm water drains and the sewers, so it is the storm water that surcharges the sewers and force the manhole covers up, allowing untreated sewage to flow on to the roads - mainly at the A417 junction with The Rudge and in the car park of the White Hart.
It is believed that an inch (25mm) of rain could put nearly 1 million litres of water into the system, running off from the roads, pavements and the roofs and drives of houses.