this very low cost pump allows for a $2000 system.
This pump will deliver lower Gallons per Minute, but has enough pressure to protect a small house.
600 gal plastic tank replaced by a 500 gal plywood tank
A pressure treated plywood tank is built by the homeowner or local volunteers.
Two 4 x 8 foot sheets of pressure treated plywood are the sides on the tank. Two 8 FT 4 inch x 4 inch posts yield four 4 inch by 4 inch posts that connect the plywood at the corners. Lag screws hold the tank together.
A 15 ft by 19 foot heavy duty plastic tarp forms the bottom and inside walls of the tank to make it waterproof.
A plastic bulkhead flange is used to create a 3 inch output port for a 3 inch suction hose which delivers water from the tank to the pump.
3/4 inch plywood is recommended. Pressure treated costs more, but is best choice if homeowner can afford it.
this is a top view of the plywood tank.