What kind of rock should I use to lay my septic tank leach lines on?

August 8, 2005 5 Comments
luv_the_red_head asked:

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5 Comments to “What kind of rock should I use to lay my septic tank leach lines on?”
  1. B K says:

    I would consult your local or state health department for installation guidelines to make sure that you have the proper materials, length, width and depth of trench. I know that any upgrades of septic systems in many areas may require a permit and inspection as well. It would be better to do it right the first time rather than have them come and make you do it over and pay a fine. I know around here they have no sense of humor when it comes to things like that. If you are all right with what you are doing, state health department web-sites usually have the guidelines and or statutes posted there. Good luck!

  2. Sand will work but any washed round rock like pea gravel will work better. Dirt works best around here. Keep the leach line LEVEL so it will leach and not run through the line at a fast rate. Don’t consult your local or state health department unless you want to pay for a licensed installer….They will be watching you like a hawk.

  3. Marla T says:

    You should use washed river rock 3/4″ to about 2 1/2″ or clean crushed rock. Typically adding leach lines usually requires a permit. Installing without a permit could complicate your life someday when you sell your house. But that probably depends on where you live. Instead of rock, there are also chambers like Infiltrator that could be installed instead of rock and pipe.

    Good luck!

  4. Tatnic says:

    crushed rock, 1″ minus. You want about 8″ under the pipe…and the bottom of the pipe needs to be at least 12″ above the SEASONAL water table, which means the water table during the wettest time of the year, not late summer.

  5. Billy M says:

    1″ Clean rock, But you probably should not be doing it your self, this is a job for a pro. If you do it your self and get caught, you could be forced into replacing the whole system. There for doubling your cost.

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