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Septic drainage field
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Septic drainage field
I’m hoping to be putting in black water and grey water septic tank and drainage fields this summer. I’m going to document the supplies list and the process on this discussion thread; feel free to comment.
Geologically, our property is above a base of lucastrine sedimentary rock: (from Wikipedia)
“Lacustrine deposits are sedimentary rock formations which formed in the bottom of ancient lakes. A common characteristic of lacustrine deposits is that a river or stream channel has carried sediment into the basin. Lacustrine deposits form in all lake types including rift graben lakes, oxbow lakes, glacial lakes, and crater lakes. Lacustrine environments, like seas, are large bodies of water. They share similar sedimentary deposits which are mainly composed of low-energy particle sizes. Lacustrine deposits are typically very well sorted with highly laminated beds of silts, clays, and occasionally carbonates. In regards to geologic time, lakes are temporary and once they no longer receive water, they dry up and leave a formation.”
The burning question is : how deep is the topsoil over this sedimentary rock? One of our team is a wastewater specialist (manager at a city treatment plant) — his imput is that we have to watch for blackwater running a long the top of this rock face. “It could travel for quite a ways.”
I’ll follow up here when we know more in May-June ’25.
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This discussion was modified 1 year, 6 months ago by
ljgeoff.
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This discussion was modified 1 year, 6 months ago by
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2 Replies
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this is a link to how to build your own concrete block septic tank: https://mirconcreteblock.com/blog/how-to-build-a-septic-tank-with-concrete-blocks/
I’m thinking that this is our best option.
mirconcreteblock.com
How to Build a Septic Tank with Concrete Blocks? - Mir Concrete Block
The tank that stores wastewater of a house or building is called a Septic Tank. A septic tank, also known as a sewage collection system, is installed in homes to treat sewage on a small scale, which is common in … Continue reading
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awesome job identifying the type of ground you are working with, this is key to deciding what kind of system you need to use.
In Tulum, where we have made some black and grey water systems, it is pure lime stone, so you need a sealed holding tank septic system as the first phase, then another lined pond before you can let the black water hit the raw ground.
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