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. 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

4. Sensor for city’s network
Need more development

5. Rethinking IT architecture = €€

6. 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

7. Questions ?