Firstly, you want to avoid tap water wherever possible because it contains high levels of calcium which can make the soil too alkaline. Rainwater is best suited to most, so collect it if you can.
Throughout the growing season, they can be watered from below to give them the best results. But, during the winter, ensure that they’re never left sat in water as their roots can rot.
One way to deal with this whilst providing a humid atmosphere is to fill at tray with pebbles and to keep the water level below the height of the pebbles. Then, when you sit the pot onto the tray, it will create a humid environment without soaking the plant.