Page 144 - Water Loss Control

Revenue water 1,643,836 m 3 /d Nonrevenue water 821,918 m 3 /d Error margin [±]: 15.0%

Water Balance for XYZ Water Company, Year 2006

Billed metered consumption 1,643,836 m 3 /d Billed unmetered consumption 0 m 3 /d Unbilled metered consumption 0 m 3 /d Unbilled unmetered consumption 30,822 m 3 /d Error margin [±]: 10.0% Unauthorized consumption 10,370 m 3 /d Error margin [±]: 0.0% Customer meter inaccuracies and data- handling errors 246,575 m 3 /d Error margin [±]: 25

Billed authorized consumption 1,643,836 m 3 /d Unbilled authorized consumption 30,822 m 3 /d Error margin [±]: 10.0% Commercial losses 256,945 m 3 /d Error margin [±]: 24.0% Physical losses 534,151 m 3 /d Error margin [±]: 25.8%

Authorized consumption 1,674,658 m 3 /d Error margin [±]: 0.2% Water losses 791,096 m 3 /d Error margin [±]: 15.6% Water Balance Example with Confidence Limits for Each Component

System input volume 2,465,753 m 3 /d Error margin [±]: 5.0% Source: WB Easy Calc software

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