Toilet water level

Water level is controlled by the bowl design. However, faulty operation of the flapper valve can cause an incomplete flush leaving a low water level in the bowel.

SJF

Actually, I too have a bowl that does not fill so bought a replacement valve kit just because the refill tube was defective.

Turns out that the little tube that goes in the pipe must supply just the right amount of water to fill the bowl before the tank gets full. Of course, it doesn't hurt if it runs over a bit. Some valves have a screw adjustment to control the refill rate. Other's don't.

It is limited by design. If the mechanics are working properly it will fill to the same level. In many applications if there are high gusty winds it will partly empty the bowl. Also over time a seldom used bowl will lower from evaporation.

Water in the bowl is called the spot. Some designs have a low spot. These are generally the bowls that do not have a flush jet. I forget the theory behind the bowls with high spots vs low spots, but if you google the net, you will probably find an expert.

Another cause of a low spot could be the bowl is not level.

Whomever wrote:

Spam goes well with eggs

Looks like by design.....

tom @