Scott Townsend wrote:

We are in the Process of putting in a new Septic Tank and we have an 8"
trench from the house to the Tank, then to the Leachfield.

The Tank needs to pump the effluent to the leachfield, so I'll need power
for the Pump and Of Course I have the 4" ABS Sewer pipe.

While we have the Trench there I wanted to put in a Irrigation Tank in the
Back 40 while its all open. It would need a 1.25' Water Supply and the Power
and Control Lines for it.

So in the one trench form the house to the tank I'd have:
4" ABS
High-voltage For the Irrigation Pump
High-voltage For the Sump Effluent Pump
Low Voltage for the Irrigation Tank Water Levels
1.25" Water Supply for the Tank.

The Trench is 3' Deep and I only need 2' to get my Drop for the Sewer line
to the Tank.

So my Questions a

Can and Should I put all of the above conduits in the Same Trench?
What Order should I put them? Seems like the Electricity should be the one
on the bottom, High Voltage, Low Voltage, Sewer, then water.

Thanks,
Scott-

The trench should be wide enough so that the various conduits can be
placed side by side, not on top of each other so that they can be
accessed individually if needed. Since you do not have any high voltage
lines (120/240V is not high voltage) there is no concern about conduit
separation for anything other than serviceability.

All conduits should be at their required burial depth or deeper. In your
case the power line should be 18" or deeper and the water and sewer
lines should be deep enough to avoid any freezing issues. The power line
should have proper warning tape installed at least 12" above the
conduit.

Pete C.