Water quality testing is the process of analyzing water samples to determine their chemical, physical, and biological characteristics. This testing helps identify contaminants, such as bacteria, heavy metals, and chemicals, ensuring that the water is safe for drinking, swimming, and other uses. Various methods are used for water quality testing, including chemical tests, microbial tests, and physical tests. These tests can be performed in laboratories or with portable kits, allowing for quick assessments of water safety. Regular testing is essential for maintaining public health and protecting the environment.