Abstract: A water-borne hazard detection and notification system deployed between water treatment facilities and water's points of use can include sensors (e.g., flow rate, microorganism detectors, and chemical detectors) and can be microprocessor controlled. Sensors detect microorganisms and/or chemicals within a water distribution system. Treatment areas can be deployed at various stages along a water distribution system, allowing for protection redundancy. Detector and/or treatment systems can be networked to remote monitoring systems (e.g., networked data/communications equipment located with agencies operating and command and control units) through wired and/or wireless network communication means and devices. Data networked monitoring and assessment can enable rapid deployment of counter measures (e.g., valve shut-off, UV treatment, field team deployment). Systems can be staged, providing for a system comprising more than one detection, shut-off and/or treatment.