Groundwater Elevation
Groundwater Elevation
(OP)
We have an existing cesspool that we wanted to replace with other types of wastewater system. In order to identify what type of system we need, we need a groundwater elevation reading first. Is it appropriate to take groundwater elevation inside the existing cesspool? Could you explain reasons if either okay or not okay?
Thanks,
Nelson
Thanks,
Nelson





RE: Groundwater Elevation
A traditional cesspool is most likely an absorptive pit constructed of loose fitting bricks. While this may provide the elevation of the ground water, over a long period of time, the cesspool outlet water path may have become plugged. If the outlet path is plugged, the cesspool water elevation may not be the same as the ground water.
If the cesspool is a holding tank that drains to a septic field, then the holding tank water level will also not be the level of the ground water. In a holding tank, the water level in the holding tank will be maintained by an outlet weir.
http://en.wikipedia.org/wiki/Cesspit
RE: Groundwater Elevation
RE: Groundwater Elevation
As far as soil permeability goes, we rely on textural analysis of the soil and estimate.
The SHWT and texture dictate whether we go with a raised system, pretreatment, or a combination of the two.
RE: Groundwater Elevation