The document analyzes and compares the water quality of four water samples - tap water, Stone Canyon Creek, Alamo River, and water from the Red Hill area of the Salton Sea. It finds that the Alamo River and Red Hill water have poorer water quality overall based on measurements of various factors like alkalinity, hardness, nutrients, suspended solids, chlorine and sulfate levels. The document also describes using a coagulation/flocculation treatment method on a mixture of Alamo River and Red Hill water which was able to improve the water quality by reducing turbidity. It concludes that treatment is urgently needed for the Alamo River and Red Hill water to improve their water quality.