We are thee experts in water flow solutions
How much water should I store?
The answer is, as much as you can. We live in the desert. The Phoenix Metro area gets about an inch of rain a month. To make it simple; if you have a 1000 square foot roof with gutters you can collect about 50 gallons of rain water. Year around that tiny 1000 square foot roof gives you about 620 gallons. Some further annual examples: 1500 square foot roof = 930 gallons, 2000 square foot roof = 1240 gallons.
How do I get water into my tank?
Mentioned above; the classic way is by gutter attached to a roof. This has proven to be the most efficient way for home owners and renters to fill a tank. A roof has a large surface area to direct the rain water to the gutters and into the tank. Some communities rely on wells to fill their tanks, but a well is expensive to drill. There is the hose method, using city water to fill the tank if the goal is to simply store water for an emergency. But, again, rain is free and so the gutter/roof method is best.
How do I get water out of my tank?
Larger vertical tanks have enough head pressure to operate a garden hose. But, if you need to feed multiple places around the home you will want a pump and pressure tank combo system. The pump gets it there and the pressure tank keeps the pump from working over time. TNB carries all the pieces and parts necessary to get water from the tank to the home with adequate pressure.