WATER UTILITIES · NRW INVESTIGATION

District Metered Area (DMA) Management

A district metered area gives a water utility a defined zone in which measured inflow, consumption and operating conditions can be compared. The value lies in validating the measurements and acting on what they reveal.

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DEFINE · MEASURE · VERIFY

Understand the zone.
Then understand the losses.

Boundary and meter review

Assess zone boundaries, valves, bypass arrangements, bulk-meter locations and measurement reliability before drawing conclusions from DMA data.

Water balance and demand

Compare suitable measured inflow information with available consumption records and the known operating context to investigate unexplained losses.

Night-flow and pressure trends

Review minimum night flow and pressure patterns while accounting for legitimate night demand, storage, varying supply conditions and data limitations.

FROM DATA TO FIELDWORK

Find where further
investigation matters.

DMA findings can guide step-testing, acoustic surveying, leak-noise logging, targeted correlation and pressure-management studies. The approach should reflect the network layout, pipe material, operating pressure, monitoring coverage and available staff access.

Evergloss supports DMA reviews and practical field investigations as part of non-revenue water (NRW) work. An unusual flow pattern is a reason to investigate, not automatic proof of leakage.

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Discuss a DMA, water balancing or NRW investigation requirement.

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