If i did not see it i would not have believe it, our shower would not drain so the men came and pumped the 3 outlets attached to the septic tank but still it was not draining . So the man that built the house was called .He told me that the grey water part of the septic tank did not have an outlet so it could be pumped out and the large man hole on top was cemented in and can not be opened. I was and still am lost for words
Maybe i did not explain it to good the grey water goes no were it in a tank of its own with no provision to pump it out unless you chip off the cement and lift a 60 klo lid
Alex,we had an issue with grey water once,easy and cheap to fix. Dig down next to the tank maybe 4ft down and 4ft square,knock a small hole toward where max water level is but below the inlet then fill the hole with large rocks,smaller cruised rocks ontop then a couple cement sacks to finish off,prob solved! That's all ok if there is earth around the tank,concrete maybe more difficult to sort!
