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New Hampshire Department of Environmental Services

Water System Emergency Planning/Security

Safe and secure drinking water is the highest priority, and water systems are continuing to assess their vulnerabilities and taking action to maintain and improve emergency response and security. The DWGB is working to provide systems with the training and tools necessary to continue to protect the state's drinking water and meet new emergency planning and security challenges.

Env-Dw 503.02 Notification of Impairment requires community and non-community, non-transient water systems to notify the DWGB within 24 hours of an emergency or security breach. Specifically the rule requires notification whenever treatment of a public water supply is interrupted, or the source of the supply is damaged or depleted so as to impair, or likely to impair, the quality or the sufficiency of the supply. Or after discovery of any actual or suspected tampering, sabotage, security breach, or any suspicious incident at the water system Or interruption of service of a pressure zone or the entire water system due to an extended power outage, line break, or other cause.

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  • Johnna McKenna
    NH Water System Security Contact
    NHDES Drinking Water and Groundwater Bureau
    29 Hazen Drive; PO Box 95
    Concord, NH 03302-0095
    (603) 271-7017
    (603) 271-0656 (fax)



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NH Department of Environmental Services | 29 Hazen Drive | PO Box 95 | Concord, NH 03302-0095
(603) 271-3503 | TDD Access: Relay NH 1-800-735-2964 | Hours: M-F, 8am-4pm

copyright 2017. State of New Hampshire