We live in a world that features greater instability than ever before. Recent attacks on the United States has shown how serious the situation is and how enemies of the state will stop at nothing to injure or kill innocent people. Thus protecting our water supply on the national, state and local levels is of vital importance. The Sigelock hydrant represents the safest design for firefighters, water authorities and authorized personnel, making it the ideal system to help reach that goal. Embedded locking clamshell design prevents unauthorized hydrant use and safeguards hydrant against vandalism. The water supply cannot be affected via the hydrant, securing it against contamination, terrorist acts. The Sigelock hydrant’s ergonomic design ensures the highest degree of hydrant operation. There are no caps to be stolen or destroyed and no foreign objects such as glass, nails, cans, rags or other debris can be inserted. Open hydrants cause sudden fluctuations in water pressure that can compromise the pressure necessary for fire suppression. This puts firefighters, first responders and the general public at significantly increased risk. Moreover, open hydrants can cause water mains to rupture.