Backwater valves are installed in the main sanitary waste piping line from the building to the sanitary waste line on the property, hence they are called in-line backwater valves. They are valves that are installed in your sewer line for the purpose of closing off the pipe when water tries to back up through it; they permit sewage to pass through in only one direction.

This topic covers information related to sanitary sewerage piping systems that are installed during construction. Sanitary sewerage systems carry waste water or matter away from a structure and into a larger sewerage network for collection, treatment and disposal. A structures sanitary sewerage system includes piping, drains, valves, interceptors, separators and other components.

This topic covers information related to sanitary waste and vent piping that is installed during construction. Sanitary waste piping carries waste water and matter from a structure. Vent piping, a component of the sanitary waste system, vents sewage gases to the exterior of the structure or outdoors.

This topic covers information related to FOG or fats, oils and grease disposal systems that are installed during construction. Fats, oils and grease from residential or commercial kitchens can clog sanitary sewer lines and in turn cause wastewater backups. A plumbing device known as an interceptor is designed to be installed in-line with a sanitary waste line to collect or intercept most fats, oils and grease, prior to their entry into a sewerage system.

This topic covers information related to septic tanks that are installed, as part of a septic system during construction. Septic systems are often installed in locations where that local jurisdiction has not provided sewage pipes for removal of wastewater and matter. Septic tanks act as a small scale treatment system, where an inlet allows sewage in. Sediment falls to the bottom and liquids leach out through a drain field. Regular cleaning and maintenance of septic tanks to remove solids is necessary.