What chambers are
Chambers are open-bottomed plastic arches laid end to end in a trench. Effluent flows into the open space underneath and soaks into the soil. There's no gravel to haul and place.
Why they're used
- No gravel to truck in — helpful on remote or tight lots
- Quick to install
- Open storage space inside each chamber
- Durable plastic that won't break down in the soil
Does my site qualify?
Whether chambers can be used — and how many — depends on the soil evaluation, the system design and what the permit approves. We'll lay out the options during the design.
Install details
- Trenches dug level to the approved depth
- Chambers laid and connected end to end
- Distribution pipe connected from the D-box
- Inspection before cover
- Backfilled and graded
Septic questions
Are chambers better than gravel?
Neither is always better. Both work when designed for the site.
Do chambers cost more?
Material can cost more, but labor and hauling are often less. It evens out.
Can chambers replace an old gravel field?
Yes, when the permit allows.