Name and explain three quality attribute s

pH measures the acidity or alkalinity of water on a scale of 0 to 14. A pH of 7 is neutral, below 7 is acidic, and above 7 is alkaline. Aquatic life is sensitive to pH changes, and extreme levels can be harmful.

Turbidity is the measure of water's cloudiness due to suspended particles. High turbidity reduces light penetration, hindering photosynthesis, and can harm aquatic organisms by clogging gills or affecting feeding.

Dissolved oxygen is the amount of oxygen gas dissolved in water, crucial for aquatic respiration. Low DO levels can indicate pollution and stress aquatic ecosystems, potentially causing fish kills.