Sanitary Sewer Overflow Emerges in Greenfield at 7:40 P.M. and Concludes at 8:50 P.M.

GREENFIELD –A sanitary sewer overflow surfaced in Greenfield on Friday, September 8, 2023, at 7:40 p.m. The overflow then concluded later this evening at 8:50 p.m. 

 The City Greenfield, WPCF, DPW reported the overflow immediately. The discharge consists of untreated sewage and waste.

The untreated sewage is discharging from a regulator chamber outfall behind 302 Deerfield Street located along the Green River. This is located at Lat 42 0 34 37” Lon 76 0 36’ 33”.

The sanitary sewer overflow discharged 66,240 gallons.  It discharged at a rate of 552 gallons per minute. 

The overflow is caused by heavy to moderate rain during a flood watch. 

The sanitary sewer overflow is impacting the Green River and Deerfield River in Greenfield, as well as the Connecticut River in Deerfield, Montague and Sunderland. The overflow does not impact drinking water.

Avoid contact with these water bodies for 48 hours after the discharge or overflow ceases due to increased health risks from bacteria and other pollutants. See the website for more information on whether specific resource areas, such as bathing beaches, are affected.

For additional information on discharge, overflows and the water department, visit