I have read other questions about the toilet burping in the bowl, but alll assumed there was a clog in the pipe. Could there be a problem with the septic system that could cause this also? Everything seems to be draining at decent rate, but two of the toilets in the house are burping when flushed or if someone is in the shower.

Thank you

Shawn

Have you checked the level in the tank, could it be full or have a very slow drain field allowing tank to fill and back up during high usage.

Shawn...

When was the last time the septic tank got pumped out? How many bathrooms and how many people in the home?

Answer these questions... see what we can come up with... ;)

MARK

Do those two toilets possibly share the same vent? I think you may have a clogged vent pipe or vent stack.