Water in Toronto is cheap, but it is not free. Electricity is expensive and likely to become more so. Saving both is good for the environment, for the condos and ultimately for you.
When you heat water, measure it first. Only heat what you intend to use. If you are making a cup of tea or coffee, don’t boil a quart (litre). If you use an electric jug, you have to heat a minimum so the element doesn’t overheat, but don’t put in more than that if you do not need it.
You can brush your teeth with one cup of water. Try it, you may like it. Compare that with how much water you use if you let the tap run while brushing. If you use an electric toothbrush, charge it only when it starts to slow down; probably a couple of weeks or more. It lengthens the life of the battery and saves electricity.