Indianola's water source is the Cambrian-Jordan Sandstone Aquifer, which lies approximately 2,600 feet below ground level. The Jordan Aquifer covers nearly all of the state of Iowa and is used by many communities as a major water supply source.
IMU owns and operates four deep water wells that pump an average of one million gallons of raw water per day. The water is locally treated using a lime softening process which reduces the natural hardness to 100-120 parts per million, or 5.8-7 grains per gallon. The plant is designed to treat 3.3 million gallons a day and is currently at approximately one third of that capacity.
Once the treatment process is completed the water is pumped through a 20 inch, high-service main to be stored in one of the two IMU water towers. The two towers combined can store a total of 1.8 million gallons of water which can supply the city with two days of usage without implementing any emergency conservation measures. Additional information can be found on the IMU website.