Sanitary Sewer System

Reducing Sewer System Backups & Overflows

Removing sump pumps from the sewer will reduce sewer system backups and overflows and lessen the strain on the wastewater treatment plant during heavy rain events. The sewer system and treatment plant are not designed to handle flow from sump pumps. A sump pump can contribute over 5,000 gallons per day of unwanted ground water to the sanitary sewer system.
 
An 8-inch sanitary sewer line can accommodate waste flows from up to 200 properties, but the sump pump discharge from only 18 properties will overload the same line, causing backups and overflows into basements.
 
Sewer backups and overflows are a public health risk and harm the surrounding environment, including the Assabet River. (12/21/23  9:03AM)

To see our Sewer Regulations,

Town of Maynard Sewer Regulation