c. Burton- on -Trent has the highest calcium content in its water.
" Calcium and magnesium enter the water mainly by leaching of rocks. Most calcium in surface waters come from streams flowing over limestone, dolomite, gypsum, and other calcium-containing rocks and minerals.
Calcium is an important determinant of water harness, and it also functions as a pH stabilizer, because of its buffering qualities. Calcium also gives water a better taste.
Calcium buffering is described as the process which help stabilize the concentration of free calcium ions within cells, in a similar manner to how pH buffers maintain a stable concentration of hydrogen ions. Buffers are essential for living cells. This is because buffers maintain the right pH of a liquid."
To learn more about Dolomite,
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