It is interesting that the Des Moines Water Works claims it ran the nitrate removal equipment at its Des Moines, Iowa, municipal water processing plant a record 177 days in 2015 as it continues to build its lawsuit against three Iowa counties’ water district supervisors.
Why the removal equipment use would jump from 106 days, the previous record in 1999, to the new 177-day record, was not explained to an Associated Press reporter.
It is the Water Works’ contention that tile drainage from farmland is what causes high nitrate levels in the river water being processed for drinking water at Des Moines. Of course, the counties and supervisors who are at the point of the court case, say there is no proof that the nitrates are unconditionally all because of farmland drainage. Also, sections of the Clean Water Act are being argued in court as to whether farmers’ tile drainage is regulated.