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ESCO Water Conservation and Efficiency Flashcards

6 cards from real ESCO practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 ESCO Water Conservation and Efficiency flashcards as text

  1. Which US federal program sets WaterSense labeled product standards that ESCOs reference when specifying plumbing fixtures?

    Answer: EPA WaterSense

    EPA WaterSense certifies products that are at least 20% more water-efficient than standard fixtures, giving ESCOs a recognized specification benchmark.

  2. A school district ESCO project installs sub-meters on irrigation zones. What irrigation control upgrade most directly reduces water waste?

    Answer: Weather-based (ET) smart controllers that adjust schedules based on evapotranspiration data

    ET-based controllers automatically reduce irrigation when rainfall or low temperatures reduce plant water demand, preventing over-watering.

  3. In a performance contract, who typically bears the financial risk if measured water savings fall below the guaranteed level?

    Answer: The ESCO bears the shortfall risk and must compensate the customer for the difference

    A hallmark of ESCO performance contracts is that the ESCO guarantees the savings and is financially responsible if actual savings fall short.

  4. What is 'blowdown' in the context of a cooling tower water management program?

    Answer: The intentional discharge of concentrated water to control dissolved solids levels in the tower basin

    Blowdown removes water with high concentrations of dissolved minerals to prevent scale and corrosion, and reducing unnecessary blowdown conserves water.

  5. Which standard published by ASHRAE provides guidance on water use benchmarking in commercial buildings?

    Answer: ASHRAE Standard 191P (Standard for the Efficient Use of Water in Building, Site, and Mechanical Systems)

    ASHRAE 191P specifically addresses water efficiency in buildings and provides the framework ESCOs use when benchmarking and designing water measures.

  6. A municipality's ESCO project targets non-revenue water (NRW) reduction. Which measure most directly reduces NRW in a distribution system?

    Answer: Pressure management zones (PRZs) that lower system pressure to reduce leak flow rates

    Reducing system pressure in PRZs directly lowers the flow rate through existing leaks, cutting physical water losses without full pipe replacement.