All reserve system and sewer distribution to be used, should be clearly identified by warning signs, different colors from taps and pipes, as well as an educational campaign for explanation to the population. The survey was prepared using the blibliographic methodology; magazines, internet and also books on the subject. The water reuse is possible if used the right technology for each situation, and its important to mention that for the uses on the public water supply, its necessary constants technologies updates for this activity