All of a sudden all four (4) commodes are leaking at the front of the water level in the bowl. High Water Pressure Problem? How to check it.
Thanks,

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All of a sudden all four (4) commodes are leaking at the front of the water level in the bowl.

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If what you're telling me is that all your toilets are overflowing when flushed then you have a blockage that must be snaked, High water pressure wouldn't cause this problem. Does everything else drain OK? Let me know, Tom

Answer Toms' questions, but if this is really a water pressure concern you can test the house water pressure by purchasing a hose bib pressure gauge at a local home improvement store... see image. Screw the gauge onto an outside faucet and take the pressure reading... take multiple readings.

High pressure would be anything that exceeds 70-80 P.S.I. If you find that you have excessive pressure then, most likely, your PRESSURE REDUCING VALVE (if present) needs to be repaired/replaced, OK?

Mark

Even if you had high water pressure in your house it wouldn't cause your toilets to back up.
Back to my original question. " Does everything else drain OK?" Let me know, Tom

I guess I'm reading this different than you, Tom. I've never seen 4 commodes back up/leak (and not the tubs/showers, too)?

Hopefully, punum will return and clarify!

Hey Mark,
If you'll go back on my posts I've been asking

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Back to my original question. " Does everything else drain OK?"

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from the git-go and haven't received a answer as yet. But since drainage and water are separate I fail to see how high water pressure could over flow all 4 toilets. Just got to be a blockage somewhere. And your thoughts. Regards, Tom