Worms are about 85 percent water, as we are. Because they breathe through their skin, they need to be kept plenty moist. I like to keep my beds at 60 to 80 percent moisture. If you don't have a moisture meter, just squeeze a handful of bedding tightly...if a few drops come out, you're OK...a stream and you're too wet. Most beginners get into trouble by over watering and over feeding...too much and too often. When watering, just mist the surface of your bins, never use a full stream of water...misting is best. If you live in town, you probably have a chlorinated water supply. As chlorine kills bacteria, this can work against you some, though it'll probably work. If you'll set a bucket of water out for a while the chlorine will dissipate and then you can mist your beds with it. Remember the worms feed on microbes. Some people like to save leftover coffee, tea, water from boiled or steamed vegetables, etc. to mist beds with, as it'll have nutritional value as well.
