septic tank BrE
holding tank AmE
waste water holding tank AmE
black waste tank

So we'll use a septic tank and a spread field.

They'd never laid eyes on her, had no idea how she came to be in their septic tank.

Q. We have a septic tank that is no longer used.

Each is being used in commercial systems (usually together with septic tanks).

My septic tank had to be moved up because of this dam.

"Some places have a septic tank and everything," he said.

The people in older houses, who were having problems with their septic tanks, wanted it.

A septic tank takes care of the sewage and, just like that, no more water bill either.

Walking back we'd talked mostly about the septic tank case.

They hide the cash in the septic tank at the park.

Residents depend on central well water and individual septic tanks.

His body was found in a pit meant as a septic tank.

We are on a septic tank system here and I want to be environmentally responsible.

If that goes into the septic tank as well, you're probably getting really salty water down there.

It is relatively common for houses outside the central area to use well water and/or a septic tank.

There's a pay meter down there that they use, an a septic tank.

House lots generally had to be large to accommodate septic tanks.

This means villages have to rely on their own septic tank.

Now, as with most things, there is a fine art to the successful laying in of a septic tank.

Septic tanks were as ever the mainstay of her conversation.

Pop, let's dump that thing down the septic tank and go.

Q. We have just moved into a house that has a septic tank system with a drainage field.

How often are septic tanks emptied, and where do the contents go?

Within the entire country, septic tanks are the most common method of sewage treatment.

Large areas of the town rely on septic tanks.