Septic Riser Location and Sizing

[@peterthompson6455]

how close to the edge of the tank can a riser be?? I thought is should be no closer than 3", is that good??

[@johng8967]

So I have another house on my property and wandering if I can add another septic line by drilling a hole on the side of the riser and tie it in to the septic tank.

[@wholesalesepticsupply9801]

No the water level would have to rise to the riser and they are not designed for that.

[@johng8967]

​@@wholesalesepticsupply9801what's the knockout panel on the side for than?? I was going to have a ejector pump at the 2nd house, pump sewerage waste though a 2" line to the septic tank. I was wondering if I can use the knockout panel on the side of the septic riser to enter and drain in the septic tank.

[@wholesalesepticsupply9801]

@@johng8967 we use the to run pump line out of but never into the tank. The tank should have a area in the side to do that.

[@XavierIsraelMatamoros]

So, the riser goes on top of the port, and the cement lid stays in place as is?

[@wholesalesepticsupply9801]

No you remove the concrete lids.

[@3sidesofeve711]

I'm in south florida and have 2 tanks. the one closer to the house is 29-30 inches across. I don't see that size on your site.

[@wholesalesepticsupply9801]

we won't have one that size. the max is 28 for the 24 in riser as the tar ring is 30 inches od

[@emmasshow3081]

I have sent you an email asking for help but no answer. My septic lid is green color plastic and measuring about 22 inches in diameter. What size of riser do I need?

[@wholesalesepticsupply9801]

To what email

[@wholesalesepticsupply9801]

We would also need a picture there are multiple manufacturers that make kids in that size and all of them are green so more detail is needed