How do you seal a PVC pipe to concrete ?

This should do the trick.
https://www.lowes.com/pd/LOCTITE-Pl...-oz-Gray-Paintable-Polyurethane-Caulk/3562724

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If water came out there sounds like your drain filled is not working properly. I think that inlet should be higher than the outlet if I am not mistaken so that water flows on out to leach field instead of trying to back up in the house. Mortor around it would be fine if that is the case.
 
Washing machine and dishwasher will fill up a septic tank fairly quickly. I've heard that some people will take their washing machine and run a separate drain out into the woods to keep from filling their tank up. I don't know how kosher that is but since it's just soapy water what harm is there? They say it will add life to your drainage field.

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The inlet to the tank is higher than the outlet leading to the leaching field. If it is backing up in the tank that means the water isn't draining out as fast as it should. Indicating that the septic field has issues or the tank itself needs a good cleanout. That is where you should focus.
 
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What is the level of the water at the outlet of the tank? @JR Green is correct in saying the level of the inlet should be about 4" higher than the outlet. The outlet should be accepting water and not be submerged in water if it is even part way, the system is not working properly. Without a grease tee in the outlet -it may have fallen off -the distribution box may have gotten loaded up or worse your leach field may be impacted. Distribution box is about 6' from outlet of tank with a lid for inspection. Sometimes the flow controllers to the individual lines get stopped up too. Hope this helps -let me know if I can answer further questions.
 
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Maybe it's the picture but I am not seeing the inlet pipe. There should be at least 2-3 inches of air between bottom of pipe and surface of water.
 
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In my setup, there is no "T" as shown in the picture. Do you think I should get one installed?
The pic I posted was one I just nabbed off the internet. I saw other pics with straight pipe as well. I wouldn't go to the trouble of adding any additional pipe to it. When they cleaned out your tank, did they open the other chamber and inspect it too? How old is the drainage system? Has there been anything heavy drive over the drainage field? If you have a crushed/restricted drain pipe it could prevent your tank from draining properly.
 
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I've seen them test a leach field by running a sharp metal rod down through where the pipe is run. If it comes out wet you know that fluid is getting there. If it comes out dry you know there is a blockage. You can often tell by how green the grass is too.
 
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As dry as it has been you can probably find your leach field by looking at the grass. If you can see it green that is a positive that it is draining but still may be slow and causing it to back up in the tank and then slowly leach out, it happens slowly any way but maybe slower than should be . Becareful digging around leach field as with the age it maybe teracotta pipe in a bed of gravel and easily damaged they are just short sections laying end to end. If you do not see it draining I would look in the distribution box and see if it looks to be draining. If not the field may be damaged or colapsed some where. You mention trees near by tree roots have been know to get in the fields and damage or slow the draining as well or there was a type of pipe they used for a while that was known to deteratie or colapase. Some called it orangeburg as its where it was made but basicly a tar impregnated paper type pipe.
 
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Orangeburg was prohibited long before 21 years ago -roots could still be part of the problem with trees nearby. Terracotta would not have been allowed in 1998 either -but roots can easily grow into the plastic pipe that was used. If there is no tee on outlet of tank I would guess some solids have made their way further downstream in the system causing a blockage.
 
Orangeburg was prohibited long before 21 years ago -roots could still be part of the problem with trees nearby. Terracotta would not have been allowed in 1998 either -but roots can easily grow into the plastic pipe that was used. If there is no tee on outlet of tank I would guess some solids have made their way further downstream in the system causing a blockage.

When I posted that I wasn’t thinking when 21 years ago put it time wise for being built or exact time frame the other products were used just in older homes but like you mentioned it shouldn’t have been either materials I mentioned.
 
When I posted that I wasn’t thinking when 21 years ago put it time wise for being built or exact time frame the other products were used just in older homes but like you mentioned it shouldn’t have been either materials I mentioned.
Not many people even know what orangeburg is - sounds like you have some experience with it. Worst idea ever. Used because they ran out of metal during end of WWII.
 
Yeah that is not good -in particular if the settling continues and angle gets worse. But it seems like you have a proper diagnosis of the problem. Probably what broke the seal around the inlet pipe.
 
Any chance your tank was run over? I have seen that and the bottom of the tank was cracked causing washing out underneath the tank.
 
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There will some variation in water level in the tank depending on usage -the outlet and leach accepts water slowly.
 
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Ya know, I wonder if one of those foundation leveling companies would tackle something like what you're dealing with?
 
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Not many people even know what orangeburg is - sounds like you have some experience with it. Worst idea ever. Used because they ran out of metal during end of WWII.


Yea it was, was at grand parents house and used at a neighbors both had to be replaced.
 
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Someone probably over dug the hole on one end of the tank and tried to back fill under it allowing it to settle over time. You could probably get it reset to level but finding someone reliable and to do it right would be the problem and not cheap. Parents were going look at having one moved at a property and it was almost as cheap to just install a new tank so they went that route.
 
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There are companies that pump some kind of foam/grout under sidewalks and other concrete that has settled and they might be able to pump it under the end of the tank to level it out.
 
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