So far, the known methods of grinding the water was raising the water pressure to power-sharing or heating water for the increased distance between the molecules. In one case, it requires a special high-capacity pumps and piping the use of holding a high pressure. Are dealt with more fire in Applied water spray method, the positive and negative aspects. Studying the properties of ultrasound was observed that the cavitation caused by water, as a result of water being asked to fine particles and water-intensive treatment can be obtained with low energy resources, water, chopped in large particles of 30-50 microns, which is defined as water vapor, high siltumietilpīgu water surface area and surface tension changes, which have so far been achieved with a water-chemical additives. Acquired teeorētiskā analysis suggests that the water can be sprayed with ultrasound, and it could be an effective firefighting tool. The ultrasonic method of treatment increases the water Damping capacity, which is a major indicator of the water used in firefighting