I ain't no plumber, that's for sure. I'm just a homeowner. My only plumbing experience consists of installing a few toilets in homes I've owned over the years and roughing in some copper pipes for a new bathtub/shower I installed. Stuff like that.

Anyway, I recently had a septic tank clean-out done and the guy who did it suggested that I glue on a sanitary tee to my home's septic tank drain. Looked into it and thought why not. So I now have the materials and the gluing seems simple enough (I've done that before), so the only thing I'm still a little uncertain about is this: How long should the pvc pipe be that I will attach to the bottom part of the tee? The septic guy told me about 15", but I want to make absolutely sure that's kosher before permanently affixing everything. This isn't a project I want to have to repeat. And...Should the tip of this pipe wind up above the tank's water line or below it?

Thanks.

The inlet pipe should extend down at least 6" from top of water level.

Thanks man. Appreciate it. Are you a plumber?

So just to make sure I'm understanding you correctly, are you saying that the pipe should extend down not more than six inches from the top of the water level (so that there is a minimum space of at least six inches between the tip of the pipe and the top of the water)?



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there is supposed to be a scum on the top of the water. dropping the inlet below this scum makes sure the in flow of water doesn't disturb the layer of scum. the 6 inch measure is just a minimum number.
look ay a few pictures on the internet to get a better visual idea.

You might be confusing. The tee should be at the water level ant the pipe extends down into the water.

Oh, it's confusing alright, as is your reply here. Appreciate it, but how can the tee be "at the water level" and "into the the water" at the same time?

I guess what I really need to know is this: Should the tip of the vertical pipe I'm going to glue into the tee be above the water or below it. And how far above or below should it be in either case?

The bottom of the drop pipe needs to be at least 6" below the water level.

Thanks!

I had googled for images but never found one this good. Very helpful--Thanks.



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