[CDN007]

Hi there, I am in the process of installing a basement bathroom on a septic system. I have already broke though the concrete for my drain lines and installed a sewage tank about 3 feet deep. After leaving the job for a couple days, I returned to find my basin floating in the hole I dug for it. It seems that I hit the water table or there is excess water under their slab. A sump pit that is located some 30 feet away on the other side of the basement seems to be level with the water that has filled into the hole I dug for my sewage basin. The water is now about 6 inches from the top of the pit.

What is the best solution for taking care of the excess water so I can safely install my tank without worrying about it floating up through the concrete after a couple months. I should mention that the ground is hard clay. Should I install a second sump pit that is deeper the sewage tank?

Thanks in advance
Jeff

[massplumber2008]

Hi CDN007...

In these cases, you should just need to pump the pit out... then install as normal, connecting the underground pipe, etc...

Then, install the 2" ejector pump... or at least place it in the pit until you have backfilled the hole and cemented the floor back over.

The weight of the pump (and the connected pipe underground) will keep the pit from rising out of the water while the cement dries and thereafter the waste water, the pump and the pipes (discharge and vent pipe) connected to the system above the ground will help to keep pit in the floor.

You should NOT need to install a separate pump, but you never know so keep an eye on the area for awhile... just to be sure!

Let me know if you want to discuss more...

MARK