Hall County has millions riding on a risky bet Georgians will want to watch.

The county has proposed to secure its drinking water for the next half-century by building a reservoir that won’t actually produce drinking water. The Glades Reservoir also faces opposition from the city of Gainesville, environmentalists and downstream politicians, as well as a more rigorous federal review process than any similar project in the state in decades.

A large part of the challenge facing Glades is its complicated engineering. As proposed, the project is an 850-acre, 11.7 billion-gallon reservoir estimated to cost as much as $345 million that would not contain a drop to drink.

In Sunday’s newspaper, the AJC takes a deep look at Hall County's water gamble. It’s a story you’ll get only by picking up a copy of The Atlanta Journal-Constitution or logging on to the paper’s iPad app. Subscribe today.