In the same lagoon sample, what was the measured pH value?

In the same lagoon sample, what was the measured pH value?

• A. 8.0
• B. 8.8
• C. 7.5
• D. 9.2

Answer: (B)

pH reflects how acidic or basic the water is, with higher values meaning more alkaline. In lagoon systems, buffering from carbonate systems and biological activity tends to keep pH in the alkaline range, often around neutral to moderately alkaline, and daytime photosynthesis can push it higher. A measured value of 8.8 fits this pattern: it’s clearly alkaline but not extreme, consistent with a well-buffered lagoon under typical operating conditions. The other values are either closer to neutral or lower than 8.8, or would indicate a more extreme alkaline condition; 8.8 best matches the observed sample data.

pH reflects how acidic or basic the water is, with higher values meaning more alkaline. In lagoon systems, buffering from carbonate systems and biological activity tends to keep pH in the alkaline range, often around neutral to moderately alkaline, and daytime photosynthesis can push it higher. A measured value of 8.8 fits this pattern: it’s clearly alkaline but not extreme, consistent with a well-buffered lagoon under typical operating conditions. The other values are either closer to neutral or lower than 8.8, or would indicate a more extreme alkaline condition; 8.8 best matches the observed sample data.