If I remember correctly, adding water to the back of the toilet storage tank will cause the level in the toilet to rise(after the next flush).
I have a dehumidifier now, and am wondering about pouring the water it collects into my toilet's storage tank. Not only would it save on water usage, but would reduce the stress on my septic tank. The amount of water it collects is probably worth a couple flushes a day. Admittedly it's pretty minor, but I can locate the dehumidifier near the bathroom and it becomes no more difficult to empty it into the toilet than it is to empty it directly into a drain.
I can either manually pour it into the tank, or setup a drain hose to automatically empty into the reservoir.
- What will happen if I overfill the reservoir, either by pouring too much into it or via an automatic drain hose that might pump too much water?
- Can I adjust the bulb in the toilet in such a way that it fills the reservoir significantly less, so that it uses less water after a flush, since I will be replacing some of that with grey water? Or is it not possible to make such an adjustment without screwing up the normal operation of the toilet?
Note there are two concerns to overfilling:
- Could the reservoir overflow and flood out of the top of the reservoir and onto the floor? (with a continuous drain hose from humidifier)
- Could the reservoir fill to a point where it does not overflow, but on the next flush it overflows the toilet? Sometimes my toilet clogs but it doesn't overflow as long as you only flush it once and clear the clog before flushing again. I want to be sure the reservoirs are designed such that it's impossible to fill them to a point where the next flush would overflow the toilet.
I think one of the vertical pipes in the toilet is open on top to allow overflow to drain out. Will this prevent both of the potential scenarios?
Note, this information would be useful to others who might want to create a DIY grey water reuse scenario that is similar to the continuous drain scenario. Perhaps having the drain from a second story sink feed into the reservoir of the first story toilet.