I continue to receive information about concrete septic tank deterioration from various sources. I believe onsite professionals in the field who are observing conditions need to suggest solutions to solve the reported deterioration problem.
First, I will list several types of onsite sewage treatment systems and discuss them, including comments I have received.
1. A septic tank (not compartmented) without an effluent filter, or a filter that allows gas movement.
2. A septic tank (not compartmented) with an effluent filter that blocks gas movement.
3. A compartmented septic tank not properly vented between compartments.
4. A septic tank properly vented between compartments.
5. The first four
