Over 520 million gallons of sewage is transported annually through the city's 73 miles of sewer collection lines. The sanitary sewer system operates on a gravity system. With the help of 17 primary pumping stations, sewage that originates from customers flows through the collection system and is delivered to the City of Portland Wastewater Treatment facility.
This division is responsible for operation and maintenance of all underground sanitary sewer system, including all gravity flow lines, force mains, manholes, cleanouts, frames, covers, structures, appurtenances, and connections to new buildings and structures, service lines, and lift stations.
In cases of sewage backups, please 361.777.4601 to identify if it is a public or private sewer service blockage. If the blockage is in the private sewer line, you will be advised to call a plumber. The owner of the property is responsible for maintaining the sewer line from the City easement to the house. Blockages in the public sewer main will be addressed by City personnel.
Note: It is the responsibility of the homeowner or business to maintain the integrity of the sewer lateral including preventing rainwater from entering the wastewater collection system through uncapped cleanouts and/or broken cleanouts and pipe.