Heavy rain in November and December prompted yet another series of "sanitary sewer overflow (SSO) events" in Bettendorf, resulting in more than 17 million gallons of untreated sewage and storm water being pumped into the Mississippi River.
With the additional sewage bypasses in the last two months of the year, Bettendorf operated pumps along the riverfront a total of 15 days during 2015 and dumped a total of more than 46 million gallons of the storm water and raw sewage into the river.