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Because of their extended service areas and numerous entry points, water distribution systems are inherently susceptible to accidental or intentional introduction of contaminants. Of paramount concern is the danger associated with chemical, biological and radiological contamination. While physical security can be implemented to limit access to aboveground facilities such as plants, reservoirs and pump stations, the distribution system itself remains largely unprotected against potential contamination. The ability to monitor the distribution system in real-time is critical to ensure the provision of an early warning detection system (contamination warning system) and timely notification and alarm, thus, improving a utility's response capability and reducing economic damages and public health impacts. Sensors installed at key locations in the water distribution system provide vital warning against contaminant intrusion events.

InfoWater SLM solves the optimal monitoring problem considering any combination of the distribution system characteristics and modeling scenarios. These can be user-defined to meet the specific monitoring requirements of a water utility, and are represented as functional layers in the optimization model as shown in the figure below.

InfoWater SLM provides a fully automated geospatial approach to develop a reliable and comprehensive sensor installation strategy. It helps you identify optimal areas (that are geographically distributed and not clustered) for the location of monitoring stations in your drinking water distribution system, and give your customers added security and peace of mind.

InfoWater SLM features include:

•  Determine optimal sensor locations for water quality monitoring
•  Ensure geographically distributed optimal sensor locations
•  Improve hydraulic calibration
•  Enhance water quality calibration
•  Rank sensors based upon a total score derived from user-specified criteria and weights
•  Automatically provide hierarchical selection process based on the water distribution system characteristics, hydraulic and water quality results, and proximity to critical facilities (e.g., schools and hospitals) and population density
•  Consider single and multiple modeling scenarios
•  Select and compare any number of scenarios for optimal monitoring site identification
•  Choose any hour of interest during an EPS
•  Select average, maximum and minimum parameter results during an EPS
•  Offer natural beaks, equal interval and quantile parameter classification methods
•  Report key statistics in graphical and tabular forms
•  Create detailed histograms for any hydraulic and water quality parameters
•  Export all or selected critical sensor locations
•  Graphically display calculated scores for pipes and nodes directly on the map
•  Color code pipes and nodes based on their score
•  Detail the spatial distribution of recommended monitoring sites on the base map
•  Complete EPANET compatibility

(Click to enlarge the picture)