Alkalinity and Water

My water property is alkalinity and water and alkalinity basically means water with a pH higher than 7. It's a measure of the capacity of water to neutralize acids which also helps figure out how "buffered" the water is against any changes in pH. For our demonstration, Garrett and I filled two beakers with water, one with Grapevine Lake water and the other with tap water. We used to pH strips to test which solution had more alkalinity. The Lake water read over an 8 on the pH scale while the tap water read a steady 7. This was due to the fact that the lake receives calcium carbonate from nearby limestone deposits. Calcium carbonate is the most notorious compound causing alkalinity. We learned that it is important to aquatic ecosystems to contain alkaline because it balances the pH in areas with acid rain and protects aquatic life against sudden changes in pH.