I am having my 50 clay pipe sewer line replaced. The plumbers just got to the part where the pool's overflow drains and backwash line ties in. He said he needed to put an "air trap" on there to pass inspection. Then, he said he is just going to tie it in like it was and cover it up, hoping the city inspector won't say anything.
I am not sure what to do. I want this done right but I don't want a huge additional cost to bring this up to code. Does anyone have any knowledge of the complexities of tying the pool drain in? Currently, the overflow drain pvc and backwash pvc Y together and then goes over to the sewer line, and straight down to tie in.