Integrated Water Quality Security System (IWQSS)

William B. Samuels and Rakesh BahadurScience Applications International Corporation

June 27, 2002

Need

Two approaches for water utility security Upgrade Infrastructure Costly Long Process Partial Protection

Upgrade Preparedness Substantial & Rapid gains Bolster security and response while

Infrastructure is being Improved

Purpose

Develop an Emergency Response Tool Assess the population at risk Determine which Intakes and water treatment plants

are impacted Develop a risk reduction strategy

Design Criteria Minimum manual interaction Minimum input data required for modeling Tabular and graphical output

Integrated Water Quality Security System (IWQSS)

Treatment System

Surface water

WaterIntake

Distribution System IWQSS

Water Treatment Process (WTP)

IWQSS Advantages

Comprehensive approach to water quality security Analyze effects in raw water:

upstream of the intake of a water supply system at the water intake

Analyze effects at the treatment plant Analyze effects in finished water

At a service reservoir At a point in the distribution system

Scope of IWQSS

WaterTreatmentProcesses

Constituents ofConcern

RiverSpillPipelineNet IWQSS

Utilityspecific

US wide

Constituents of Concern

Information Sources 42 CFR part 72 – biological agents USAMRIID - CWA Dr. Deininger – SAIC consultant

RiverSpill Module

Emergency response tool for fate and transport of contaminants

Uses real-time stream flow data Operational for US

RiverSpill Design Principles

Develop national-scale model framework for emergency response capable of performing hydraulic transport

routing and connectivity of surface waters Uses best available national-scale data Address the needs of a broad user

community

RiverSpill Architecture

System Components•ArcView 3.2•Network Analyst 1.0

•Databases•Enhanced Reach File (EPA, USGS)•USGS Real Time Stream Flow•Public Water Supplies (EPA)

RiverSpill Operation

Location of incidentFate and transport of contaminant to the nearest intakeIdentify the population served by the water treatment plant.

RiverSpill Users and Applications

Users Federal, State, & Local government agencies Water Utilities

Applications Planning Exercises Response to Accidental & Deliberate Acts

Flow Predictions - How well does it work ?

Travel Time Skill Assessment - observations1 vs. model calculations

1 Jobson, 1996, Prediction of Travel time and Longitudinal Dispersion in Rivers and Streams, USGS Report 96-4013

Rivers Analyzed

Effectiveness of Water Treatment

Process Efficiency

Percent Removal

PipelineNet Module

Module components EPANET hydraulic model EPANET Toolkit ArcView GIS

PipelineNet Architecture

PipelineNet Operation

Hydraulic simulationWater quality simulation Concentration Water tracing Water ageing

Calculation of population and infrastructure at risk

PipelineNet Users and Applications

Users Water Utilities

Applications Normal operations Planning Exercises Response to Accidental & Deliberate Acts

Operational Use Utah Olympic Public Safety Command Salt Lake City, Murray City, Provo, Park City

Calibration Criteria

Followed AWWA calibration guidelinesCompared observed and simulated water level in the tanks

Murray City Results

PipelineNet

IWQSS Summary

Spill Location

Model Fate andTransport

Simulate Water TreatmentEffectiveness

Model Water Distribution

Calculate Population andInfrastructure at Risk

RiverSpill Output

Putting ItAll

Together