Show us your home made tools

If you have a small submersible pump similar to the one I have, it may not put out enough pressure to do what you want. I built an emergency water supply in our basement after the hurricane destroyed our city water system. I have two 55 gallon food grade barrels in the basement, full of clean well water from a generous neighbor up the road. I closed the valve where the city water comes in and hooked a hose from the submersible pump in a barrel to a boiler drain spigot in the basement, via a hose to backfeed our plumbing so we would have water from the tap. It works barely well enough to take a shower....but it does work. Very low water pressure even after bleeding the air from the lines. Play around with your pump in a 5 gallon bucket of water to see how it does before you invest in a big tank. That way you can work the bugs out before spending a lot of money on a tank.
Thanks, what a plumber guy said, to fix use a well-trol tank (the one with the ballon in it). The one I have was hooked up to a house and had 60 psi pressure, till house was built then on community water (10 houses on the Potomac Creek). Only use will be for washing in slop sink and maybe a toilet hooked to one of those 55 g blue plastic tanks in ground, urinal just drains down the hill on ground. Way out in county.