WATER EFFICIENCY Q A Reference 1. Defin e: Chem ic al Treatment The use of bio cid al, co nd it io nin g, dispersant, and scale-inhibiting chemicals in cooling towers to control biological growth, scale and corrosion. 2. Define: Landscape Coefficient A constant that takes into account a plant’s species and density as well as an area’s microclimate and is used to calculate the evapotranspiration rate. 3. Define: Nonpotable Water Water that is not fit for drinking. 4. What types of plants can help reduce irrigation requirements? Native or Adapted plants 5. What strategies can be used to reduce the amount ofpotable water used forirrigation? Plant species, irrigation efficiency, captured rainwater, reused graywater, waterconveyed by a municipality for non-potable uses. 6. What is the current baseline water usage of a commercial or residential toilet? 1.6 gallons per flush (gpf) 7. Define: Aquatic Systems Wastewater treatment systems that use biological organisms such as bacteria, plants, and fish to naturally treat the water. 8. Define: Water Meter A device that measures the amount of water used within a building. 9. Define: Density Factor Part of the landscape coefficient calculation. It modifies the evapotranspiration rate of a plant or group of plants to account for the density of the plant material. 10. Define: Conventional Irrigation The most common irrigation system used in a particular region. Conventional irrigation typically consists of pressurized systems with above ground spray heads. 11. What plumbing f ixtures should be included when calculating water use reduction? Toilets, urinals, bathroom sink faucets, showerheads, kitchen sink faucets, pre- rinse spray valves. 12. Define: Conductivity Meter or EC MeterA device used for measuring the amount ofsalt and nutrients in water. 13. Define: Bleed-off or Blowdown The release of some of the recirculating water in a cooling tower to remove dissolved solids that could cause mineral build-up in the system.
