Safe Drinking Water ProgramInformation for Water System and Water Industry Professionals
Source water assessment and protection Safe Drinking Water Program: Services and Organization
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Public Water System Procedures
Forms and Checklists
provided in Emergency Response Documents
may be helpful in
conducting the threat assessment and organizing information for more
effective response.
Conduct Threat AssessmentWhen an incident or possible threat is reported to local law enforcement, the operator or superintendent, along with local law enforcement, will decide if there is any credible threat to the water supply system. The evaluation should include an inspection for physical evidence, such as containers or material, in an intrusion area; a quick check for chlorine residuals in all parts of the system; and a check of finished water for turbidity, odor, color, and pH. Care should be taken with this assessment. An unusual event such as finding an unlocked door or hatch, without any other indication of compromised water quality, should not automatically be considered a credible threat to the water supply system.
No Credible Threat
Credible Threat
Public water systems are strongly encouraged to develop a reporting protocol and relationship with local law enforcement before an incident occurs. Having local law enforcement aware of the water system, its critical components, and any areas of vulnerability is a key part of water system security.
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