The chambered system is a replacement for the conventional stone and pipe leaching bed. The chambers containing the distribution pipes are installed in 0.5 - 0.9 metre wide trenches. The pipes are not pressurized. Approximately the same length of trench is used as with the pipe system, only there is no crushed stone layer.
Sites where access is a problem
Alternative to gravel-filled trench
Light-weight chambers can be hand-carried into position
No imported sand or gravel needed. Made of high-density polyethylene
Provides more infiltration surface area than a trench