UJ × TIA Thematic Area 1 • Water Security & NRW Mitigation
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Ultrasonic Smart-Meter Registry & Minimum Night Flow (MNF) Leak Sentinel
Continuous 01:00–04:00 SAST acoustic & hydraulic anomaly detection across Johannesburg urban distribution rings.
LoRaWAN / NB-IoT Ultrasonic Smart Water Meters (60-Second Telemetry)
19.4% NRW Reduction Verified| Meter ID | Precinct & Pipe Section | Telemetry Protocol | Cumulative Reading | Live Flow vs. MNF Baseline | Line Pressure & Acoustic | Valve & Anomaly State | Autonomous / Remote Action |
|---|---|---|---|---|---|---|---|
| WM-JHB-APK-001 |
Auckland Park Kingsway Precinct Node A
North Ring Main 110mm uPVC
|
LoRaWAN Class C (868 MHz) | 4,620.5 kL |
7.4 L/min
MNF Base: 7.2 L/min
|
3.85 bar
Acoustic: 18.2 dB
|
NOMINAL FLOW |
|
| WM-JHB-APK-002 |
Auckland Park Kingsway Precinct Node A
East Riser Header 75mm
|
NB-IoT Ultrasonic Pulse | 2,190.1 kL |
6.1 L/min
MNF Base: 6.0 L/min
|
3.82 bar
Acoustic: 17.5 dB
|
NOMINAL FLOW |
|
| WM-JHB-DFC-003 |
Doornfontein Engineering & Civic Precinct
Siemert Main Feed 110mm
|
LoRaWAN Class C (868 MHz) | 3,890.0 kL |
6.8 L/min
MNF Base: 6.9 L/min
|
3.78 bar
Acoustic: 19.0 dB
|
NOMINAL FLOW |
|
| WM-JHB-APB-004 |
Bunting Road & Brixton Ridge Corridor
Bunting Booster Line 90mm
|
Modbus TCP Ultrasonic | 3,410.2 kL |
8.1 L/min
MNF Base: 7.8 L/min
|
3.65 bar
Acoustic: 20.1 dB
|
NOMINAL FLOW |
|
| WM-JHB-SWC-005 |
Soweto Chris Hani Road Precinct Node
Pimville Trunk Distribution
|
LoRaWAN Class C (868 MHz) | 4,180.8 kL |
7.9 L/min
MNF Base: 7.5 L/min
|
3.72 bar
Acoustic: 18.8 dB
|
NOMINAL FLOW |
|
| WM-JHB-BRM-006 |
Braamfontein Civic & High-Density Corridor
Jorissen High-Pressure Main
|
NB-IoT Ultrasonic Pulse | 3,120.0 kL |
6.5 L/min
MNF Base: 6.4 L/min
|
3.90 bar
Acoustic: 16.9 dB
|
NOMINAL FLOW |
|
Johannesburg Precinct Non-Revenue Water (NRW) Conservation Ledger (YTD)
| Precinct Code | Precinct Name | Monitored Population | YTD Metered Volume | NRW Saved via EcoGrid AI (19.4%) | Municipal Tariff Saved (ZAR) |
|---|---|---|---|---|---|
| JHB-APK-01 | Auckland Park Kingsway Precinct Node A | 640 citizens | 4,620.5 kL | +896.4 kL saved | R 43,475 |
| JHB-DFC-02 | Doornfontein Engineering & Civic Precinct | 520 citizens | 3,890.0 kL | +754.6 kL saved | R 36,598 |
| JHB-APB-03 | Bunting Road & Brixton Ridge Corridor | 480 citizens | 3,410.2 kL | +661.5 kL saved | R 32,083 |
| JHB-SWC-04 | Soweto Chris Hani Road Precinct Node | 590 citizens | 4,180.8 kL | +811.1 kL saved | R 39,338 |
| JHB-BRM-05 | Braamfontein Civic & High-Density Corridor | 450 citizens | 3,120.0 kL | +605.3 kL saved | R 29,357 |