Your sewers are a basic building block of a healthy community. The sewer from your house to the ?main? line is also called a sewer lateral, and the lateral belongs to you and is your or your landlord?s responsibility to maintain. Most of the sewer main lines in Bellflower belong to the City of Bellflower. The City?s sewer system is made up of 95 miles of pipeline. To maintain a healthy community the sewers must be large enough and well maintained to accommodate the amount of sewage produced by our growing community.