Drain pool

[krokokid]

I’m ready to drain my pool here in Las Vegas and I’m trying to locate my sewer clean out. There is an in ground box near the from door.. it shows 2 lines and a big round thing. Please see picture..
Is this my sewer clean out?

Thanks for the help!

 

[mknauss]

Take the cover off and have someone flush a toilet. You should be able to hear the water running down the sewer..

It is not a typical sewer cleanout, but likely is one.