• A glass of Castle Island Brewing Company "Chuck" beer, a dry hopped cream ale, rests on a rock along the bank of the Charles River, Thursday, Sept. 15, 2016, in Cambridge, Mass. Leading New England breweries are competing to see who can turn the questionable water of Boston's Charles River into the tastiest suds. (AP Photo/Charles Krupa)

    A glass of Castle Island Brewing Company "Chuck" beer, a dry hopped cream ale, rests on a rock along the bank of the Charles River, Thursday, Sept. 15, 2016, in Cambridge, Mass. Leading New England breweries are competing to see who can turn the ... questionable water of Boston's Charles River into the tastiest suds. (AP Photo/Charles Krupa) (The Associated Press)

  • Master brewer Bob Cannon, of the Samuel Adams Boston Brewery, pours a pitcher of their "80-Miles of Helles" beer, which is made using water from Boston's Charles River, Thursday, Sept. 15, 2016, in Boston. Leading New England breweries are competing to see who can turn the questionable water of Boston's Charles River into the tastiest suds. (AP Photo/Charles Krupa)

    Master brewer Bob Cannon, of the Samuel Adams Boston Brewery, pours a pitcher of their "80-Miles of Helles" beer, which is made using water from Boston's Charles River, Thursday, Sept. 15, 2016, in Boston. Leading New England breweries are competing ... to see who can turn the questionable water of Boston's Charles River into the tastiest suds. (AP Photo/Charles Krupa) (The Associated Press)

  • Master brewer Bob Cannon, of the Samuel Adams Boston Brewery, smells the aroma of their "80-Miles of Helles" beer, which is made using water from Boston's Charles River, Thursday, Sept. 15, 2016, in Boston. Leading New England breweries are competing to see who can turn the questionable water of Boston's Charles River into the tastiest suds. (AP Photo/Charles Krupa)

    Master brewer Bob Cannon, of the Samuel Adams Boston Brewery, smells the aroma of their "80-Miles of Helles" beer, which is made using water from Boston's Charles River, Thursday, Sept. 15, 2016, in Boston. Leading New England breweries are competing ... to see who can turn the questionable water of Boston's Charles River into the tastiest suds. (AP Photo/Charles Krupa) (The Associated Press)

Strange brews: Making beer with Boston river water

Features Associated Press

Some of New England's leading breweries are competing to see who can turn the questionable water of Boston's Charles River into the tastiest suds.

Continue Reading Below

Six area breweries have signed on for the first ever "Brew the Charles" challenge. The competition is a highlight of HUBweek, a weeklong Boston-area festival celebrating innovation in art, science and technology, starting Sept. 25.

Sponsors hope the competition helps spotlight the importance of water conservation and water-saving technologies.

Samuel Adams brewer Jennifer Glanville says the Boston beer maker is submitting a German "helles" lager to "showcase" the river water's unique character.

The Charles River Watershed Association applauds the spirit of the competition, but cautions that it's not always safe to swim in the Charles, let alone drink from it untreated.