Case StudyMixed-Use Residential · West New York, NJ · Installed January 2014

Park Avenue Apartments — West New York, NJ
780 Fewer Recorded Gal/Day · $3,100/yr Saved

Mixed-use apartment and commercial building on a 1-inch municipal meter. Flow Dynamics M&V-verified — vacancy held constant below 2.5% throughout the measurement period.

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780Fewer Recorded Gal/Day2,930 before · 2,150 after

285,000Gallons Saved/Year285K gal annually

$3,100Annual SavingsWater + sewer

7 monthsPayback PeriodFrom install date

Daily Water Consumption — Before vs After

Before: Sep 2013–Jan 2014 · After: Jan–Sep 2014 · Utility rate $0.0134/gal (water & sewer)

Consumption dropped from 2,930 to 2,150 gallons per day — 780 fewer recorded gallons per day. Vacancy remained below 2.5% throughout both measurement periods, confirming the reduction is attributable to the valve.

Annualized Water & Sewer Cost — Before vs After

Projected at $0.0134/gal (water + sewer) · USD

Reported annual savings are $3,100 — with a 7 months payback on the valve investment. Utility rate: $0.0134/gal.

780

Fewer Recorded Gal/Day

2,930 before · 2,150 after

$3,100

Annual Savings

285,000 gallons/yr

7 months

Payback Period

From installation date

Key Findings

780 fewer recorded gallons per day

The 5100 Park Avenue report lists daily averages of 2,930 gallons before and 2,150 gallons after installation on a 1-inch municipal supply.

Vacancy held below 2.5% — no occupancy distortion

The management company confirmed vacancy remained constant under 2.5% throughout both the pre- and post-installation measurement periods. This eliminates vacancy as a confounding variable in the savings calculation.

No central AC — savings are pure water efficiency

The property has no central air conditioning system, which means there are no cooling tower or evaporative cooling losses in the water system. The report lists 780 fewer recorded gallons per day after installation.

7-month payback on a 1-inch installation

At $0.0134/gal combined water and sewer, the $3,100/yr savings produced a 7 months return on investment — well within a single budget year.