What measures the amount of water that does not flow into a municipal sewer system?

The deduct meter is designed specifically to measure water that does not enter the municipal sewer system. This type of meter is often installed for commercial or industrial facilities that utilize water for processes that do not contribute to wastewater, such as irrigation, cooling, or manufacturing processes. By measuring the amount of water used that does not flow into the sewer, facilities can receive credits or deductions from their sewer bills, reflecting the true volume of wastewater being treated.

In contrast, other types of meters, like water meters, typically measure the total amount of water consumed, regardless of its end use. Flow meters measure the flow of water through pipes but do not specifically account for what is or is not discharged into the sewer system. Discharge meters may track the amount of wastewater leaving a facility but do not focus on non-sewered water usage. Thus, the deduct meter is uniquely suited to serve its purpose in monitoring water that is not contributing to the sewer system.