All wells should be cased to a depth of at least 25 feet below ground surface. The casings of wells developed in sand or gravel should extend watertight to or into the aquifer. The minimum casing diameter for every new well should be at least 5 inches nominal inside diameter.

The locations of about 106,000 water wells in Indiana.

On average, you can expect a well to cost between $5,000 and $9,000 when you're digging a 150-foot deep well. Well-drilling companies will charge by the foot, averaging between $25 and $65 per foot to dig and install a well.

Indiana has the most miles of rivers and streams deemed too polluted to swim in of any state. Almost all Indiana's lakes and reservoirs sampled are unfit for drinking water, putting more pressure on the state's water utilities to remove harmful bacteria like E. coli and toxic algae.