Emergency Planning for Water Utilities by American Water Works Association

By American Water Works Association

Water and wastewater utilities needs to be ready for any kind of emergency. Public well-being has to be secure and repair needs to be maintained or fast restored.

Manual M19 offers ideas for constructing contingency plans for numerous emergencies from normal failures to human-caused crises. The handbook explains how you can improve an emergency preparedness plan, find out how to establish vulnerabilities on your water procedure, and the way to figure out how a disruption might most likely influence provider

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5 ML/d) during the summer. The treatment plant has a capacity of 13 mgd (49 ML/d). Each well has a capacity of 4 mgd (15 ML/d). Liquifiable Area Standpipe #1 Pump Station #1 N Well #1 Seismic River Old Area Old Area New Area New Area Pump Station #2 Reservoir Stand Pipe #2 Treatment Plant Well #2 Low-Pressure Zone High-Pressure Zone Source: Kennedy/Jenks Consultants Engineers and Scientists (1993). Figure 3-11 Schematic of Seismic City water system Copyright © 2012 American Water Works Association.

Copyright © 2012 American Water Works Association. All Rights Reserved. 42 EMERGENCY PLANNING Mitigation actions for the pump station structure and equipment are the same for similar system components such as treatment plants. These actions are discussed in the section on treatment, which follows. Wells are vulnerable to earthquake hazards. Mitigation actions can be applied to the following subcomponents: Casing. Wells should not be installed in liquefiable soils or soils subject to lateral spreading that could bend the casing.

In summary, the treatment plant structure should survive but would probably be off-line because of damage to the intake, piping, and other equipment. Other problems could be sediment and increased turbidity in Seismic River and the failure of the bridge upstream of the intake, which could damage the intake. Pipelines. Pipe in the “old” area is mostly cast iron, which could fail in liquefiable soils. Pipe in the “new” area is ductile iron, which may have a somewhat better survival rate if the joints are properly restrained in liquefiable areas.

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