Sanitary sewers are designed and installed with sufficient diameter to carry the normal waste discharges from a residence or business.
When FOG is discharged to the sewer system, it cools and accumulates on the sidewalls of the sewer pipes.
Over time, this accumulation of fats, oils and grease congeals to the inside of the sewer collection system which restricts the flow, requires more routine maintenance, requires more frequent replacement of collection system and causes blockages in the sewer system, which may result in overflowing manholes or residential and commercial sewer backups.
The City of Milwaukie is helping the food service industry understand the problems associated with FOG discharges and to provide business owners assistance in managing FOG correctly through the use of Best Management Practices (BMP’s).
