Does your disposal "hum" but does not turn when you flip the switch? Flip the switch off and turn off breaker or unplug disposal to prevent accidental startup of unit and personal injury. Using a disposal wrench (or a 1/4" Allen wrench) find the center of the bottom of disposal and insert wrench. Move the wrench back and forth in clockwise and counter clockwise rotations to get the unit to move freely. If it does not move freely after repeated attempts it could be seized with rust or a foreign object. Shine a flash light through the rubber flaps and see if there's anything obvious that is jamming up the disposal. Use caution (and pliers) when retrieving anything in case of sharp edges. If you flip the switch and there's no sound from disposal make sure breaker isn't tripped and the unit is plugged in. Next there is a "Reset Button" (see image) If the button is even with the bottom of the unit it might not be tripped but if it's sticking out a little bit it'll go in when you press it.

Do you have a high water bill? The culprit can be many, many things. Leaky faucets, running toilets or even the main water service from the meter to the house. One way to check is to turn off the water to the house and look at the meter dial. If the little blue gear (or red triangle) stays still it might not be the main water service. If it moves ever slightly or if it's a digital meter and the .00 number is moving then it can be an indication that there is a leak in your main service. Sometimes if the leak is bad enough the city will come out and inform you of it. You can also call them and see if your consumption is higher than normal.

Does your toilet run for an unusual amount of time after using it? Does a "jiggle" of the handle seem to make it stop? Could be a worn out flapper or a flapper that is out of adjustment and the chain is getting caught on something or getting caught under the flapper. Left unchecked this can result in a high water bill.

If your toilet is still running and "jiggling" the handle isn't helping it could be the fill valve. The diaphragm inside it will wear out after a few years and will result in either constant running or not letting water into the tank at all. Left unchecked this too can result in a high water bill.