Taste and odor comes from algae, bacteria, organic matter, gases, and chemicals.

Taste and odor comes from algae, bacteria, organic matter, gases, and chemicals.

• A. TRUE
• B. FALSE
• C. Only algae cause
• D. Only chemicals cause

Answer: (A)

Taste and odor in drinking water come from a range of substances and processes, not just one source. Algae can release compounds like geosmin and MIB that give an earthy or musty smell even at very low levels. Bacteria and the decomposition of organic matter can also produce odorous compounds. Gases such as hydrogen sulfide create rotten-egg odors, and certain chemicals, including disinfection by-products or treatment residuals, can impart noticeable tastes or smells. Because all these sources can contribute to T&O, the statement is true.

Taste and odor in drinking water come from a range of substances and processes, not just one source. Algae can release compounds like geosmin and MIB that give an earthy or musty smell even at very low levels. Bacteria and the decomposition of organic matter can also produce odorous compounds. Gases such as hydrogen sulfide create rotten-egg odors, and certain chemicals, including disinfection by-products or treatment residuals, can impart noticeable tastes or smells. Because all these sources can contribute to T&O, the statement is true.