Which parameter directly measures the clarity of water?

Which parameter directly measures the clarity of water?

• A. Turbidity
• B. Color
• C. Temperature
• D. pH

Answer: (A)

Clarity of water is about how easily light passes through it, which is affected by suspended particles that scatter light. Turbidity directly quantifies that haziness by measuring how much light is scattered by these particles, giving a direct read on how clear the water appears. It’s usually reported in nephelometric turbidity units, reflecting the immediate impact of suspended solids on visibility. Color, while related to what’s in the water, indicates tint from dissolved substances or pigments and doesn’t measure haze. Temperature influences physical and chemical processes but not transparency, and pH gauges acidity or basicity rather than how clear the water is. So turbidity is the direct, best indicator of water clarity.

Clarity of water is about how easily light passes through it, which is affected by suspended particles that scatter light. Turbidity directly quantifies that haziness by measuring how much light is scattered by these particles, giving a direct read on how clear the water appears. It’s usually reported in nephelometric turbidity units, reflecting the immediate impact of suspended solids on visibility. Color, while related to what’s in the water, indicates tint from dissolved substances or pigments and doesn’t measure haze. Temperature influences physical and chemical processes but not transparency, and pH gauges acidity or basicity rather than how clear the water is. So turbidity is the direct, best indicator of water clarity.