Residents warned of sewage leaking into three bodies of water near Northborough

Updated:

NORTHBOROUGH, Mass. (MyFoxBoston.com) -- Residents near three bodies of water in Northborough are being told to avoid them this weekend due to raw sewage.

The Mass. Department of Environmental Protection says heavy rains have caused overflow at Shrewsbury's sanitary sewer system near the old wastewater treatment plant. This caused a manhole to be dislodged, resulting in a combination of untreated sewage and storm water flowing out of it at a rate of about one million gallons per day.

Environmental experts say the sewage, which is heavily diluted by storm water, is flowing into Hop Brook, Smith Pond, and Thayer Pond. Experts ask residents to avoid contact with the water in the brook and ponds through the weekend as a precaution.

The Mass. DEP plans to take samples to check for bacteria levels once the flow of water is reduced.