What city has the cleanest water in the US?

I'm curious to know, what city in the United States boasts the cleanest water? Is it a bustling metropolis with advanced filtration systems, or a serene rural area with naturally pristine springs? As someone interested in both cryptocurrency and finance, I understand the importance of sustainable infrastructure and clean energy sources. Similarly, having access to clean water is crucial for public health and economic development. Can you enlighten me on which city leads the way in terms of water quality, and what factors contribute to its pristine state?