It means the Town of Fishers will be in your neighborhood to clean the sewer main lines starting Monday of the week that is posted. The Town of Fishers strives to clean the mainline sewers within the town's district once every year. This is done to prevent backups and blockages. It allows the town to inspect the sewers in your area to ensure they are in good condition.
For more information of the Town's sanitary sewer cleaning program, how your household plumbing works in conjunction with the Town's sewer system and steps you can take to minimize potential service problems click here.