1. Water Security Plan E. Chauveheid Water Quality Manager

2. Quality secured by EWS (online)
EWS : Early Warning System
Quality secured by EWS (online)
Real prevention
200 sensors
Catchment
Transport
Storage
City’s network
Treatment
Not secured by EWS
Late prevention

3. City’s network : Quantity secured
Large pipes : less pipes, lower complexity, but dynamic

4. City’s network : Quantity secured
Small pipes : more pipes, higher complexity, and dynamic

5. Sensor for city’s network
Some issues
Most common sensors are non specific
Conductivity, pH, Turbidity, UV-visible absorption, Chlorine, Oxygen
Limited number of available location in cities
Limited space available underground
Electricity availability
Significant electrical consumption
Costly : investment, maintenance, communication

6. Sensor for city’s network
Need more development

7. Rethinking IT architecture = €€

8. EWS for city’s network Rough estimate But for low probability events
Investment cost : ± 5 M€
Maintenance cost : > 0,5 M€/year
But for low probability events
At the moment sensors, infrastructure needs and global cost are evaluated

9. Questions ?