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  • CHAPTER7
    WATER RESOURCE CONSERVATION, QUALITY AND EFFICIENCY

    SECTION701
    GENERAL

    701.1 Scope.

    The provisions of this chapter shall establish the means of conserving water, protecting water quality and providing for safe water consumption.

    701.2Water usage metering required.

    Water consumed from any source associated with the building or building site shall be metered. Each potable and reclaimed source of water, and each onsite nonpotable water source, shall be metered separately. Meters shall be installed in accordance with the requirements of the International Plumbing Code. For the purposes of Section 701.2.1, each meter identified in Table 701.2.1 shall be capable of communicating water consumption data remotely and at a minimum, be capable of providing daily data with electronic data storage and reporting capability that can produce reports that show daily, monthly, and annual water consumption.

    Exception: Fire sprinkler systems installed in accordance with Section 903.3 of the International Fire Code shall not be required to be metered.

    701.2.1 Individual metering required.

    All potable and nonpotable water supplied to the applications listed in Table 701.2.1 shall be individually metered in accordance with the requirements indicated in Table 701.2.1. Similar appliances and equipment shall be permitted to be grouped and supplied from piping connected to a single meter.

    Exception: In Group I-2 occupancies and ambulatory care facilities, water used for patient treatment or to support patient care shall not be required to be individually metered.

    TABLE 701.2.1

    METERING REQUIREMENTS

    APPLICATIONREQUIREMENTS
    IrrigationIrrigation systems that are automatically controlled shall be metered.
    Tenant spacesTenant spaces that are estimated to consume over 1000 gallons of water per day shall be metered individually.
    Onsite water collection systemsThe makeup water lines supplying onsite water collection systems shall be metered.
    Ornamental water featuresOrnamental water features with a permanently installed water supply shall be required to utilize a meter on makeup water supply lines.
    Pools and in-ground spasIndoor and outdoor pools and in-ground spas shall be required to utilize a meter on makeup water supply lines.
    Open and closed circuit cooling towersCooling towers with a flow through a tower greater than 500 gallons per minute shall be required to utilize a meter on makeup water and blow-down water supply lines.
    Steam boilersThe makeup water supply line to steam boilers anticipated to draw more than 100,000 gallons annu-ally or having a rating of 500,000 Btu/h or greater shall be metered.
    Industrial processesIndustrial processes consuming more than 1,000 gallons per day on average shall be metered indi-vidually.
    Evaporative coolersEvaporative coolers supplying in excess of 0.6 gallons per minute, on average, makeup water shall be metered.
    Fluid coolers and chillersWater-cooled fluid coolers and chillers that do not utilize closed-loop recirculation shall be metered.
    Makeup water for closed loop systems such as chilled water and hydronic sys-temsMakeup water supplying systems of 50 tons of cooling capacity or 500,000 Btu/h of heating capacity shall be metered.
    Roof spray systemsRoof spray systems for irrigating vegetated roofs or thermal conditioning shall be metered.

    For SI: 1 gallon = 3.8 L, 1 gallon per minute = 3.8 Lpm, 1 ton = 12,000 Btu, 1 British thermal unit per hour = 0.00029 kWh.