Most will be combined (foul and greywater) once it's out front and under a manhole cover. The chambers themselves are not full of shit and don't stink bad. Shit should be passing through, along with water. If you can take the cover off easily enough it should become pretty obvious what's leading to it if you wait a few min for someone to use the loo.
Most will be combined (foul and greywater) once it's out front and under a manhole cover. The chambers themselves are not full of shit and don't stink bad. Shit should be passing through, along with water. If you can take the cover off easily enough it should become pretty obvious what's leading to it if you wait a few min for someone to use the loo.