Where’s your night flow baseline?

Written By Gareth Williams

Water utilities lose at least USD $39 billion per year to non-revenue water, and leakage is a major component (Liemberger and Wyatt 2019).

The good news is that the operational data utilities already hold is undervalued for identifying and tracking leakage growth.

Quantified leakage growth is valuable for decisions about where to get your best return on investment with maintenance activities, via water loss ranking.

The figure below shows SensorClean's Night Flow module with baseline, year-on-year night flow growth and presented as the combined real loss index for maintenance prioritisation.

The figure presents daily minimum night flows with maximum daily temperature. The figure annotates the Baseline flow and position as well as annual lowest night flow data.

System 57 - Daily minimum night flows with Baseline and Annual Lowest Night Flow

System 57 - Summary of financial year growth in night flows with Combined Real Loss index for ranking

References

Liemberger, R. and A. Wyatt (2019). "Quantifying the global non-revenue water problem." Water Supply 19(3): 831–837.

Gareth Williams
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