Tabella

Riferimento per il prerequisito 1 e il credito 1 - Water use

Reduction

Commercial Fixtures, Fitting, and Applicances

Commercial toilets

Commercial urinals

Commercial lavatory (restroom) faucets

Commercial prerinse spry valves

(for food service applications)

Residential Fixtures, Fitting, and Appliances

Residential toilets

Residential lavatory (bathroom) faucets

Residential kitchen faucet

Residential showerheads

Current Baseline

1.6 gallons per flush (gpf)*

Except blow-out fixtures: 3.5 (gpf)

1.0 (gpf)

2.2 gallons per minute (gpm) at 60 pounds per square inch (psi), private

applications only (hotel or motel guest rooms, hospital patient rooms)

0.5 (gpm) at 60 (psi)** all others except private applications

0.25 gallons per cycle for metering faucets

Flow rate ≤ 1.6 (gpm)

( no pressure specified; no performance requirement)

Current Baseline

1.6 (gpm) ***

2.2 (gpm) at 60 psi

2.5 (gpm) at 80 (psi) per shower stall****

* EPAct 1992 standard for toilets apllies to both commercial and residential models.

**In addition to EPAct requirements, the American society of Mechanical Engineers standard for public lavatory faucets is 0.5 gpm at 60 psi (Asme

A112.18.1-2005). This maximum has been incorporated into the national Uniform Plumbing code and the international Pumbling code.

*** EPAct 1992 standard for toilets applies to both commercial and resistential models.

**** Residential shower compartment (stall) in dwelling units: The total allowable flow rate from all

flowing showerheads at any given time, including

rain systems, waterfals, bodysprays, bodyspas and jets, must be limited to the allowable showerhead flow rate as spacified above (2.5 gpm) per

shower compartment, where the floor area of the shower, compartment is less than 2, 500 square inches. For each increment of 2, 500 square inches

of floor area thereafter or part thereof, an additional showerhead with total

allowable flow rate from all flowing devices equal to or less than the allowable flow rate as specified above must be allowed. Expetion: Showers

than emit recirculated nonpotable water originating from within the shower compartment while operating area allowed to exceed the maximum as

long as the total potable water flow does not exceed the flow rate as specified above.

/45