Muskegon County's Department of Wastewater Management says an overflow at the 1690 Lakeshore Drive pumping station let sewage into Ruddiman Creek Monday morning.

Authorities say fewer than 25,000 gallons spilled into the creek, and Public Health - Muskegon County says people should avoid body contact and fishing in Ruddiman Lagoon or at the mouth of the creek because of likely E. Coli contamination.

Wastewater workers collected samples to analyze for the bacteria.