Which supermarket is cheapest? If a private sewer is blocked, any of the users of it may pay for it to be unblocked it is advisable for the users of a private sewer to agree among themselves how any charges are to be shared. Is there anything wrong with this page? This is the comfort you deliver when you install vaillant’s. Pop (you might call it soda), particularly coca-cola and pepsi, is excellent for beating a clog.