What causes a toilet to lose some of it's water in the bowl? After flushing it, it fills up just fine. When it stops filling, within 30 seconds the water level in the bowl drops a bit (maybe 3/4") and stays there forever. No leaks, two-piece toilet.
The flapper or ball that raises when you flush the toilet is bad. It wastes alot of water when bad.
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"7. Toilet Bowl Water Level Drops
After you walk away from the toilet and the tank has filled, does the water level mysteriously drop? If so, two things can be wrong. The toilet may be partially clogged. The clog can actually cause a siphon and pull water from the bowl. The other possibility is more severe. There can actually be a crack or small defect in the colon of the toilet. This is the channel that water passes through to get to the drain pipe. A colon crack or defect means it is time for a new toilet."
you may be overfilling the bowl. professor flush at fluidmaster is quoted here: "Toilet bowls in general A note on bowls in general: Each toilet bowl is made so it can hold a predetermined amount of water. If you purposely overfilled the bowl you would see in the minute following the water recede down and then stop. The bowl will do this each time it is over filled. If the bowl is filled with the right amount of water there will be no receding of the water level. This is true of an underfilled bowl too. The bowl should fill with the proper amount of water at the same time the tank fill valve fills the tank and then shuts off." i love their site:
more from buffalo ny: fluidmaster sells a fill valve with an adjustable clamp that squeezes the small rubber hose that runs water into the overflow tube. with my low 42 pounds per square inch of water from the street here i don't always need it but you may, depending on water pressure and tank size and bowl capacity. my goal here is to get the refills after a flush to complete in 90 seconds or less. if you have higher water pressure and flow by your toilet, optimize the flush for full flush with a flusher fixer, and replace the fill valve too. these parts and further info at:
It must be filling up over the level of the "S" trap then it drains by gravity to equal the S trap level. No big deal, Save some water and lower the tank level.
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