What are the signs of an algae bloom in pool water?

The presence of an algae bloom in pool water is typically indicated by green or cloudy water and slippery surfaces. Algae are microscopic organisms that thrive in warm, sunny conditions and can rapidly multiply when the pool water conditions are favorable, such as low chlorine levels or high temperatures. When algae proliferate, they can impart a green tint to the water or cause cloudiness, making the pool visually unappealing and potentially unsafe for swimming.

Slippery surfaces are also a common sign of algae growth, as the organisms can create a film on pool walls, steps, and surfaces, increasing the risk of slips and falls. This combination of visual cues is essential for pool operators to recognize, as addressing an algae bloom promptly is crucial to maintain water quality and safety.

The other choices describe conditions that are not consistent with an algae bloom. Clear water and smooth surfaces, for instance, are indicative of well-maintained pool water rather than a problem. Likewise, foamy water accompanied by a strong odor may point to other issues like improper chemical balance or organic matter breakdown but does not specifically signal an algae bloom. High chlorine smell and clear surfaces generally reflect adequate chlorine levels and effective sanitation, which would help prevent algae growth rather than indicate its presence.