What is the pH of flow water?

Could you possibly elaborate on the pH level of flow water? I'm quite curious to know if it tends to be acidic, alkaline, or neutral. It would be interesting to understand if there are any factors that might affect its pH, such as the source of the water or environmental conditions. Could you also explain the significance of pH in flow water, and how it might impact its usability or quality? I'm keen to hear your thoughts on this matter.