Generation of ozone poses a challenge because it is highly unstable and will rapidly decompose to oxygen and thus must be replenished. Current available technology for mass production of ozone for use in wastewater treatment plants is by using electrical discharge generator, which might require some initial startup investment. The cost of purchasing and maintaining the generator may be seen as a burden but in actual fact, the benefits imparted in the long run for use of the system will definitely outweighs the initial cost. The principal on how the ozone generator works generally relies on use of high voltage, which is applied through a narrow gap between electrodes to break and combine oxygen molecules together.