The discussion revolves around a concern about tap water that developed a strong ammonia smell and taste after being stored in a Gatorade bottle. Initial tests using red cabbage as a pH indicator showed the water turned blue, suggesting a basic pH, which could indicate ammonia presence. Participants recommend contacting the local water company for professional testing and suggest alternative testing methods, such as using a pH test kit or an ammonia test designed for aquariums. Some caution that the ammonia smell might stem from the Gatorade bottle itself or potential contaminants in the refrigerator rather than the tap water. The conversation emphasizes the importance of thorough testing and monitoring of water quality, especially if ammonia is suspected.