WHY is Warrington Borough Council allowing people to build extensions to their properties without investigating as to whether the drains/drainage system can cope with all the proposed extensions?

I have to endue stinking overflows from my drain in my front garden as a direct result of these crazy decisions.

My drains have not been fit for purpose even before any allowed extensions and this has now become an intolerable situation.

It’s like something from 17th century London.