The city of Hannibal says it has found a dozen homes with sewer systems connected to municipal storm drains.

The Quincy Herald-Whig reports that that the Missouri Department of Natural Resources alerted Hannibal after receiving a complaint in early February. City engineer Matt Munzlinger says the once-commonplace practice is a violation of city rules and poses the threat of public bacterial exposure.

The city is offering a five-year rebate program to help residents with the cost of repairs. Property owners will have 90 days to reconnect their sewer mains to the city's sanitary sewage system.

City Hall - Hannibal, Missouri

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