All of the Following Are Major Steps in Treating Freshwater

question 39

Multiple Choice

All of the following are major steps in treating freshwater to make it potable EXCEPT ________.

• A) Reservoirs are used as large holding areas that allow particulates to settle to the bottom
• B) Water is treated with magnesium sulfate to reduce the growth of photosynthetic microbes
• C) Water is eventually pumped into special tanks that filter it with rocks or sand to remove the majority of microorganisms
• D) The final step pumps water into holding tanks for disinfecting chlorination or light treatments

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