← System Models Infrastructure
What are these models?
Models that estimate how much water is lost through leaks in the distribution network and how this changes over time under different repair and renewal strategies.
What are they used for?
- Setting leakage reduction targets
- Testing the impact of monitoring and repair strategies
- Comparing baseline vs accelerated improvement scenarios
Typical inputs
- Baseline leakage (megalitres per day)
- Pipe repair rates
- Asset renewal rates
- Leak detection speed
Typical outputs
- Leakage trajectory over time
- Target compliance forecasts
- Cost-benefit of intervention options
Tools & sources
Common tools
- IWA Water Balance Methodology
- Ofwat Leakage Performance
- SCADA leak detection analytics
Key sources
Where these models are used
| Case Study | Tool / Model | What it does |
|---|---|---|
| Thames Tideway Tunnel | InfoWorks ICM | Simulates sewer flows, CSO events, and storage capacity |
| Deep Tunnel Sewerage System (DTSS) | Integrated sewer network models | Optimises conveyance and treatment capacity |
Water • UK
Thames Tideway Tunnel
A 25 km super sewer beneath London intercepting combined sewer overflows to dramatically reduce sewage pollution in the River Thames.
Water • Singapore
Deep Tunnel Sewerage System (DTSS)
National provision of water security through used water reclamation via a deep tunnel sewage system and three water reclamation plants.
Related use cases
Decisions these models support:
- Collect real-time system data — Gather continuous readings from sensors across the water network — pressure, flow, quality, and e...
- Detect and report sewage overflows — Identify when combined sewer overflows (CSOs) discharge untreated sewage into rivers or coastal w...