Question:
I’m interested in cleaning drainfields and flow-testing with water or air. Thoughts?
Answers:
I have been cleaning drainfields since around 1990. I first tried using a jetter at 30 gpm at 2,000 psi (not a good idea). I found out that 6-10 gpm at 3,500-4,000 psi works the best. With this you can blast into a biomat, cut out roots and flush solids back into the tank.
If the field is trapped by a biomat or sludge, once you establish a flow, treat the field with bacteria. If roots are the problem, buy a good jetter head (one that cuts with water, not
