infiltration

Davenport/Bettendorf achieve big reductions in sewage overflows; court ordered fixes address dumping of sewage into Mississippi River

Upgrades to the jointly owned Davenport/Bettendorf sewage system over the past four years has led to "marked reductions" in untreated and partially treated sewage being dumped into the Mississippi River during flooding and after heavy rainfalls.

According to the annual report to the Iowa Department of Natural Resources (IDNR) filed April 1, the improvements to the sewage treatment plant and sewage collection systems in the two communities have "reduced sewer backups and overflows.

Latest sewage bypass lasted four days and totaled 18.4 million gallons pumped into Mississippi River

Bettendorf pumped 18.4 million gallons of untreated sewage mixed with storm water into the Mississippi River over a four-day period earlier this month after heavy rain and high water clogged the main interceptor along the riverfront and flows overwhelmed the treatment capacity of the Davenport/Bettendorf sewage treatment plant.

Pumps along the riverfront operated from June 14 through June 18, transferring back-up in the sewer lines into storm water pipes that empty into the river.

Despite interceptor work, high water and heavy rain result in Bettendorf dumping raw sewage into river

Despite $2 million in storm sewer interceptor work, high water and heavy rains are again forcing Bettendorf to dump raw sewage into the Mississippi River.

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