sewer trap?

[Jeanyves]

Hi, I have an old puisard (sump) (1967) still working ok, not using much since I plan to have a humanore toilet. But still I just want to refresh the whole thing, at the moment the vent is outside and it's just a 1 1/2 inch pipe coming up about 6 feet straight up of the main 4 inchs PVC pipe, I dig the whole thing out and found out why it is sometime stinky inside the bathroom, there is no sewer trap (siphon) P-trap off the 4 inch pipe that goes to the puisard, I look around and something I can see that normal sewer system connected to the city sewer system have all a P-trap but not on regular septic tank. Should I install one? I do have normal P-traps off the bathroom sink, kitchen sink, bathtub and washer, but also there is no vents on any of them, only the outside vent, which seem to me way too small. The toilet is connected directly to the 4 inch sewer pipe. So P-trap on the main 4 inch PVC pipe and vents on part of the system inside. Why you guys recommend?

 

[justin_dewan90]

From what research I've done with the verbage you've used. Are you on a septic tank or city sewer? In my area only places with large city mains have traps. Not every sewer has a trap. If you have a smell "occasionally" more than likely something else is the cause. Call your city sewer department and see if you are in a trap district. If you are, then you need a sewer trap. If not, then you don't.

 

[justin_dewan90]

As far as venting. You kitchen/washer should have their own vent. Usually tubs and lavatory sinks vent off of the same vent as the stool does. If they are in close enough proximity to the stool vent.

 

[justin_dewan90]

Where are you from? Looked up humanore, and it's a composting toilet? Just curious. Never heard of such a thing.