Have concerns about an ORG at my house. I noticed that there was water sitting in the bottom of the pipe but didn't think much of it until I checked the level today. 75mm of water just sitting in the pipe. See images below. What's the story here, doesn't seem normal
http://imgur.com/Sxf6SYk
http://imgur.com/3FGbZnX
http://imgur.com/yx9EcOH
http://imgur.com/dnkzwEZ