Three northern Iowa counties being sued by a Des Moines, Iowa water utility have received $900,000 in donations to help with legal bills. However, officials from Sac, Buena Vista and Calhoun Counties in Iowa have not identified the donors because they say state law exempts the donors from being identified. The Des Moines Register reports at least one county is attempting to get permission from the donors to identify them. The lawsuit filed last year by Des Moines Water Works alleges the three counties that oversee ten agricultural drainage districts should be required to obtain federal water pollution discharge permits because they release pollutants into rivers. Four Iowa agriculture groups have acknowledged making contributions to the counties involved. Those include the Agribusiness Association of Iowa, the Iowa Corn Growers Association, the Iowa Soybean Association and the Iowa Farm Bureau. Legal bills for the counties involved are near $1.1 million, so far.