# Dirty water in only one toilet bowl- clogged vent?

**URL:** <https://boards.straightdope.com/t/dirty-water-in-only-one-toilet-bowl-clogged-vent/737303>\
**Category:** In My Humble Opinion\
**Created:** [November 11, 2015, 5:29pm UTC](https://boards.straightdope.com/t/dirty-water-in-only-one-toilet-bowl-clogged-vent/737303 "2015-11-11T17:29:30Z")\
**Posts on this page:** 1\
**Page:** 2

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**Author:** ![Finagle](https://avatars.discourse-cdn.com/v4/letter/f/b19c9b/32.png) [@Finagle](https://boards.straightdope.com/u/Finagle)\
**Post date:** [November 15, 2015, 11:57pm UTC](https://boards.straightdope.com/t/dirty-water-in-only-one-toilet-bowl-clogged-vent/737303/21 "2015-11-15T23:57:43Z")

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One thing I can think of that might help diagnose a clogged sewer pipe – have someone else flush a toilet elsewhere in the house while you watch this one. If the level rises, or it gets cloudy, then I’d definitely suspect some trouble downstream.

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