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Over 100,000 Threads 500,000 Plumbing Posts
Plbg.com also known as the PlumbingForum.com. The popular plumbing tips, remodel and advice forum and blog. Ask any toilet, sink, faucet, pump, water quality and plumbing related questions.
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Author:
richard904 (MA)
As toilets went from 3.5 gpf to 1.6 and then 1.28 did the plumbing codes change to allow the waste system to better accomodate low flow toilets? If I built a new house now with all 1.28 gpf toilets, would the waste system be designed differently than if I used 1.6 gpf toilets?
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Author:
packy
MA code has not changed. we still are allowed 3 toilets on a 3" drain. after that we must increase to 4". it makes no sense to me.
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Author:
hj
To put it simply, NO!
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Author:
waukeshaplumbing (WI)
WI took away their 3 toilets = 4"...its now all on DFU...so you could have 9 toilets on a 3" sewer
i dont think it will matter with pvc, but i hear from drain cleaners that some older houses now need their main drains snaked a couple of times a year because there isnt enough water being flushed to push the poop down...the poop is sitting while the water goes to the city sewer
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