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Efficiency and Control
Flow recovery is one of the most critical operational and financial challenges facing water utilities. A significant share of the volume produced at treatment plants is never billed: it is lost to undetected leaks, illegal connections, macro-metering errors, or inaccurate micro-metering. This non-revenue water (NRW) represents production costs with no financial return, and added pressure on increasingly limited supply sources.
Recovering this volume starts with knowing where it's being lost. Sectorizing the network into District Metered Areas (DMAs), combined with precision bulk meters, pressure and flow dataloggers, and acoustic correlation systems, allows utilities to calculate water balances by sector and detect anomalies that were previously invisible. Instead of reacting to leaks reported by customers, the utility can proactively identify high-loss zones and prioritize interventions.
The operational impact is measurable: every cubic meter recovered reduces the volume that must be produced, pumped, and treated, resulting in lower energy consumption, less wear on infrastructure, and greater water availability to meet demand growth without developing new sources. Reducing NRW also improves key indicators reported to regulators and facilitates access to financing for infrastructure improvement projects.
Utilities that invest in flow recovery aren't just pursuing an immediate financial benefit — they're building an operational data foundation that supports future decisions on investment, infrastructure renewal, and long-term hydraulic planning.
Leak Monitoring
In many drinking water distribution networks across Mexico, the volume actually billed represents only a fraction of the volume produced. The difference — technically known as Non-Revenue Water (NRW) — combines physical losses (leaks, pipe bursts) and commercial losses (under-metering, illegal connections, billing errors). Flow recovery directly addresses this problem, applying metering and instrumentation technology to turn invisible losses into actionable information.
How It Works
The process begins with hydraulic sectorization of the network into District Metered Areas (DMAs) — smaller, more controllable operational units where inflow can be precisely measured and compared against billed consumption. Electromagnetic or ultrasonic bulk meters, along with pressure transmitters, continuously capture these variables. Data is transmitted via telemetry to a central platform, where the water balance for each sector is calculated and abnormal night-flow patterns are identified — one of the most reliable indicators of active leaks.
Business Value
Every cubic meter of non-revenue water represents a production cost with no return: pumping energy, treatment inputs, and infrastructure wear invested in water that never generates revenue. Reducing NRW through flow recovery has a direct effect on the utility's financial efficiency, while extending the useful life of supply sources without requiring investment in new production capacity.
Operational Benefits
Key benefits include: proactive leak identification before failures escalate, objective prioritization of pipe rehabilitation work, fewer customer complaints related to low pressure or intermittent supply, and reliable performance indicators (such as NRW%) required by regulators and financing bodies.
Technology and Integration
Modern flow recovery solutions integrate bulk metering, pressure and flow dataloggers, acoustic correlators for precise leak location, and analytics platforms that combine field data with hydraulic network models. This information can integrate with GIS systems for geospatial leak visualization, with CMMS platforms for repair crew scheduling, and with existing SCADA systems to maintain a unified operational view.
Scalability
A flow recovery program doesn't require transforming the entire network at once. The typical approach starts with a pilot in one or a few DMAs, validates results, and refines the methodology before progressively scaling to full system coverage — aligning investment with the results achieved at each stage.
Recovering flow is, at its core, recovering visibility over an increasingly scarce resource. If your utility wants to quantify its real losses and define a recovery plan with measurable impact, Marfel can help assess your current infrastructure and design a suitable implementation path.
