Is one allowed to use a basement toilet that uses a pump on Shabbos?


Question continued:

The pump is triggered by a buildup of waste, so it’s not directly triggered by the flush. But after a certain amount of waste gathers, the pump (electric) is triggered. Would one be allowed to use such a toilet on Shabbos?



If it won’t definitely be activated when you flush, it’s permissible to use.

You can check if you can adjust the “float switch” to be activated with a higher water level which will make it less likely to turn on (or get a large tank).

Additionally you may be able to set some timers with random times so it will only be activated during those times.