Dropping water level in toilet pan?

chech the manhole cover out side drains most likely blocked

erj
October 2009

Thanks very much John, it gives me somewhere to start looking. Andy

Andy Palmer
October 2009

When you use the other drains in the house, especially another loo, the vacuum caused in the soil pipe causes some water to be sucked out of the pan. This is either due to not enough ventilation to the SVP or the pipe itself having a blockage.

John
October 2009