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RainStorm13 t1_iy0b3g2 wrote

Reply to comment by Rolling_on_the_river in Plumbing back ups in two spots. by 403carpenter

If so, the issue may just be the low flow toilets these days. When the cast iron drains were installed, toilets were 3+ gallons per flush. So there was a lot more water per flush. Are your toilets low flow? Modern toilets are limited by law up to 1.6 gallons per flush.

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Rolling_on_the_river t1_iy0gjuy wrote

I am unsure of this, I am outside of the US. It's clear when there is a blockage that the flow of the flush is worse.

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RainStorm13 t1_iy0gpu4 wrote

Correct. When there is a blockage, the toilet will not flush correctly.

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Rolling_on_the_river t1_iy2boa1 wrote

I have reasons to believe the problem lies elsewhere.

In my house I have this pipe that's connected to the system. This pipe is capped with some sort of de-pressuriser. This sometimes smells like sewage. Could this be the culprit?

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