A service tap refers to which feature of a sewer system?

• A. Water hammer that occurs in a collection sstem
• B. A small spring-loaded valve used to bleed off excess line pressure
• C. The point of connection from a building sewer to a public sewer
• D. Noises often heard in manholes that are downstream of a lift station

Answer: (C)

The service tap is the point where the building sewer connects to the public sewer. It marks the interface between private plumbing and the municipal sewer system—the location where wastewater from a property enters the public main and where the city may regulate tapping, sealing, and backflow prevention. It’s not about water hammer (pressure surges in water mains), a bleed valve used to relieve pressure, or noises in manholes downstream of a lift station, which are separate issues or components.