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Old 08-20-2016, 11:35 AM   #1
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Septic system question


Not sure if this is the best place to post this or not?

We bought a cabin 3 years ago, I just had the tank pumped a few weeks ago.
I had a large root mass floating in the tank. The septic, when it was put in was not sited very well and is near the woods.
After the guy left I did get most of the root mass out of the tank.

I suspect that roots may have worked themselves into the tank where the riser sits on top. I am new to septic so I am not sure how the riser is secured to the tank.

So if I dig down to the top of the tank around the riser and find this is the case what options do I have to seal this area better and prevent roots from working their way in?


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Old 08-20-2016, 11:56 AM   #2
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Re: Septic system question


Remove the riser and apply seal material before re-installing. One of the polyurethane concrete glues should work.
Can you post a picture?
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Old 08-20-2016, 12:56 PM   #3
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Re: Septic system question


that makes sense, thank for the response. I don't have any pics yet, it will probably be next weekend before i dig around the riser and look at it.
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Old 08-20-2016, 01:51 PM   #4
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Re: Septic system question


Remove all trees near septic tank and distribution lines. Roots will just grow back. Copper sulfate is used in sewer lines to kill tree roots. They eventually come back though. I don't know what it would do to the bacteria that dissolves solids in a septic system but I think I would periodically use it until I got rid of the trees.
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Old 08-22-2016, 07:16 AM   #5
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Re: Septic system question


Copper sulfate would not work well inside the septic tank because you would need a tremendous quantity ($$$) to achieve the concentration needed to kill the roots compared with within a sewer pipe.

Check to see where the roots entered the septic tank. If very near the top you could excavate a little just outside the septic tank and sever the (probably nearly horizontal) root trunk just prior to where it enters the septic tank. When doing this, cut out a 2 inch section of the root trunk, don't just make one saw cut and fill up the hole again.

Alternatively or additionally you could pump the septic tank more often than needed (try two years from now) so you can look inside and check for and remove root regrowth.

Get a 20 or so foot length of flexible 12 inch duct and drop it down into the septic tank and hitch up a fan to the upper end to air out the septic tank for a couple of hours before you try to climb down in. You need to get rid of poison gas that is the byproduct of normal septic tank operation and some of which is by itself odorless.
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Last edited by AllanJ; 08-22-2016 at 07:36 AM.
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Old 08-22-2016, 09:08 AM   #6
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Re: Septic system question


Logic tell me that the roots are most likely entering through the distribution lines.
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Old 08-22-2016, 09:51 PM   #7
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Re: Septic system question


We successfully get rid of Root in and around septic tanks and drain fields unfortunately not a DIY job in fact not too many companies have the knowledge and equipment to do this type of work, but if the system is fully invaded forget it time to dig up and replace
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