Allowing consumer fraud claims against the Walgreens drug chain for incorrectly taxing bottled water in Chicago could have “crippling” consequences, business groups have told the state’s top court.A coalition that includes the Illinois Retail Merchants Association and the Chicagoland Chamber of Commerce argue the drugstore chain made an innocent mistake when it applied the city’s 5-cent tax to carbonated and flavored drinks such like LaCroix and Perrier. The tax, in place since 2008, applies …