Non-Revenue Water (NRW) Management

Pillar 1

Zoning & pressure control

Structure the network into measurable zones and control pressure to prevent new leaks and bursts.

SIV (Sectional Isolation Valve)

Install or upgrade isolation valves so areas can be shut off during maintenance or emergencies, cutting loss during repairs.

DMZ Establishment

Create district metering zones with bulk meters and pressure loggers to measure water loss accurately.

DMZ Re-Establishment

Audit and restore existing zones that are no longer effective to keep the NRW programme accurate.

Pressure Management Area (PMA)

Form pressure zones and install PRVs to control system pressure and reduce new bursts.

Advanced Pressure Control

Automatic, demand-based pressure control via smart PRVs, SCADA and IoT sensors for continuous reduction.

Pillar 2

Leak detection & repair

Find and fix physical (real) losses proactively, before they surface.

Active Leakage Control (ALC)

Proactively survey, locate and confirm leaks before they become visible at the surface.

Acoustic Leak Detection (ALD)

Pinpoint hidden leaks early using ground microphones, correlators, noise loggers and hydrophones.

Leak Repair

Excavate and repair identified leaks and service connections to cut losses directly.

Pipe Replacement

Replace ageing, burst-prone mains as a long-term solution to recurring losses.

Pillar 3

Metering & commercial recovery

Reduce commercial (apparent) losses by improving metering and billing accuracy.

Meter Replacement

Replace old or under-registering customer meters to recover commercial losses and lift revenue.

Meter Reading Management

Improve reading accuracy with AMR/AMI, exception handling and billing integration.

Pillar 4

Assets, storage & monitoring

The data, storage and monitoring backbone that supports the whole NRW programme.

GIS Establishment

Map the pipe network and build an asset register to support planning and operations.

Hydraulic Modelling

Simulate the network (EPANET, WaterGEMS, InfoWorks) to determine the best NRW strategy.

Tank Overflow Management

Monitor reservoir levels and automate valves to prevent overflow losses.

Tank Rehabilitation

Restore storage tanks through structural repair, waterproofing and internal coating.

SCADA & Telemetry

Real-time central monitoring of flow, pressure, reservoir levels and pump status.

Toolkit

Products & capabilities

Field-proven technologies across the full NRW spectrum.

Leak noise loggers (PLNCL)

Permanent acoustic loggers for continuous, network-wide leak monitoring.

Smart water meters

Ultrasonic, NB-IoT and LoRaWAN meters for AMR/AMI and consumption monitoring.

Pressure management

Pressure loggers, PRVs, smart pressure controllers and remote monitoring.

Active leakage control

Ground microphones, leak correlators, acoustic loggers and pipe tracers.

SCADA & telemetry

Reservoir, pump-station, flow and pressure monitoring.

GIS & hydraulic modelling

Network mapping, asset register and hydraulic simulation.

Expected impact

Typical NRW reduction

10-25%

Full programme (3-5 years)

3-8%

DMZ + active leakage control

2-6%

Pressure management

3-10%

Pipe replacement

Industry-typical ranges; actual results vary by network condition and baseline.