Description:How does dirty river water become the clean water that comes out of your faucet? This free reference sheet and exit ticket walks middle school students through the six stages of drinking water treatment — from coagulation to disinfection — in a clear, engaging format perfect for science, environmental studies, or STEM classes. What's Included:1-page student reference sheet explaining all 6 stages of water treatment (coagulation, flocculation, sedimentation, filtration, disinfection,