Point-of-use water meter

Point-of-Use (POU) meters were developed to provide a submetering solution for those properties that cannot be submetered with traditional submeters due to piping designs that bring multiple pipes into the home or office (stacked risers). . The meters are specifically designed for stacked riser installations typically found in properties that use a centralized boiler to provide hot water.

In a typical installation, very small flow meters are installed unobtrusively at each hot and cold outlet to the shower/bathtub, toilet, sink, dishwasher and washing machine. Depending on the manufacturer, the flow meters either have a built-in transmitter or are connected to an interface card/transmitter. The transmitters report usage information to a central processing computer, which in turn forwards the usage information to a billing center where bills can be printed and sent to the end user.

Equipment and installation costs are typically higher than traditional systems, but payback is still typically less than a year. When deciding on a POU meter, the main thing to consider is that the meters can be read by any automated reading system (AMR). This allows the property owner to choose between many billing companies and does not tie the owner to devices that can only be read by a few companies.

Numerous studies have shown that submetering reduces consumption by up to 39%. Although POU meters have been available for over a decade, they were not widely used until recently. With the current interest in green solutions and ever-increasing water and wastewater costs, properties that could not be metered traditionally in the past are now installing POU meters and benefiting from the same type of consumption reduction that properties with traditional installation have been realizing for years. With approximately 50% of homes and 90% of office buildings using stacked riser installations, the benefits of submetering with POU meters have hardly been touched.

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