After pumping out our septic tank, I'm told that my drain-field is clogged,
probably with roots. After digging out the entrance to the drain-field, I
see that there is no distribution box, just Teed off PVC branching into the
I can't afford $5k+ for professionals to replace my field, but I don't want
to do a crappy job. There's some good information here
http://muextension.missouri.edu/xplor/envqual/eq0401.htm , but can I ask a
1) Is the lack of a distribution box a big or little problem? Can I
just copy what was done 30 years ago?
2) If I just buy 4" schedule 40 PVC and drill 1.2"-3/4" weep holes,
how far apart should they be? Or should I buy something else?
3) What kind of soil barrier should I put over the gravel above the
trenches? Should I use something quality like tar roofing paper?
I live in the Florida Keys, where the soil is about 6" deep over petrified
and limestone. I plan on manually excavating one trench at a time, as time
allows, and replacing the old with the new, scrapping the old next to or on
top of the new before filling it back in.
Thank you for your help.