What is water usage efficiency?

Water usage efficiency is a measure of how well a facility, area, or geographic region uses water for various purposes. It is a measure of the amount of water that is withdrawn from a source and how much is actually used for the intended purpose. For example, if a lake is used for irrigation purposes, the water usage efficiency would be determined by the amount of water withdrawn from the lake for that purpose compared to the amount actually used for irrigation. In New York, water law requires water usage efficiency plans for all new developments, redevelopment projects, and major water-using activities. These plans are meant to ensure that water is used efficiently, and that any new uses of water are consistent with protecting the environment and the sustainability of the water resource. Water usage plans usually include components such as water conservation measures, water reuse, and water metering. Conservation measures might include installing low-flow shower heads or taps, using water-efficient appliances, and fixing plumbing leaks. Reuse strategies might include collecting and storing rainwater for use on gardens or lawns, and wastewater reuse such as using treated greywater for irrigation. Water metering is the process of measuring the amount of water used so that it can be billed accurately. In addition to water efficiency plans, other regulatory measures to help improve water use efficiency include higher rates for higher-level water uses, and periodic water audits to ensure that water is being used as efficiently as possible.

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What is water usage efficiency?

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