Water is the source of life, and most human activities are inseparable from boiled water. However, water pollution has seriously threatened human health at present. There are two main aspects of water pollution: (1) Organic pollution caused by microorganisms (bacteria and viruses) in water, which is produced by waste of feces, animals and vegetables. Water Test Kits https://www.cd-testkit.com/water-test-kits.html
