Sometimes the water level in the toilet bowl drops below the trap
letting sewer gas into the bathroom. How can the water level be
raised in the bowl? Why is it that sometimes the level is low--this
has happened recently and the toilet has been working fine the past 15
Something's changed in your vent stack. Bird's nest, dead animal, back
flush clog, or something. Your water is getting siphoned out. Check your
vents. Bowl water height is determined by the trap design. Make sure the
"fill pipe" is connected to the overflow in the water tank.
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