Methodology for the National Water Savings and Spreadsheet: Indoor Residential and Commercial/Institutional Products, and Outdoor Residential Products
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Methodology for the National Water Savings and Spreadsheet: Indoor Residential and Commercial/Institutional Products, and Outdoor Residential Products

  • Author(s): Schein, J
  • Letschert, V
  • Chan, P
  • Chen, Y
  • Dunham, C
  • Fuchs, H
  • McNeil, M
  • Melody, M
  • Strattron, H
  • Williams, A
  • et al.
Abstract

This report describes the analytical models Lawrence Berkeley National Laboratory (LBNL) developed to estimate impacts of the U.S. Environmental Protection Agency’s (EPA’s) WaterSense® labeling program. The models assess national impacts for WaterSense labeled toilets, faucets, faucet aerators, showerheads, flushing urinals, commercial pre-rinse spray valves, and weather or soil moisture sensor-based irrigation controllers (WBICs) by analyzing national inputs for water use in residential and commercial/institutional (CI) markets. For irrigation controllers, LBNL’s methodology also incorporates a scenario that evaluates impacts in three key large states that are considered to be the principal market for “smart” irrigation controllers: California, Florida, and Texas. The models estimate impacts for the water savings attributable to the program and the net present value (NPV) of the lifetime water savings from more efficient products.

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