LOWELL, Mich. (WZZM) -- A no contact order remains in effect for the Grand River, which means coming in contact with the river can make you sick.

Thursday morning the Kent County Health Department tested the river near the fairgrounds in Lowell to measure the level of E. coli bacteria. High levels of E. coli are an indicator there are other harmful pathogens in the river like listeria and shigellosis all of which cause severe vomiting and diarrhea.

"With flood waters you get an elevated level of E. coli counts because of septic tanks overflowing as well as waste water treatment plants that have been stressed discharging into the river," says Sara Simmonds, head sanitarian with the Kent County Health Department.

Two other sites of the Grand River were also tested; the area where the Rogue River meets the Grand River in Plainfield Township, and Johnson Park in Walker.

The tests results are expected back Friday. The health department will then determine if further testing is needed for other contaminants dangerous to public health.