Anyone interested in a free water analysis?

Hello everyone, im juan. Im a college student aiming to become a IT support, currently going to HCC. got this new job for the summer that consists in provide water analysis for completely free, if you curious to know what exactly is in your water and what harms can do your body, please let me know, i basically get paid for performing this tests, if you interested please let me know that will help me out a lot, i just need to perform 5 water test to get my certification, thanks for you time