1. Dissolved Oxygen (DO): This is essential for aquatic life. DO levels indicate the health of the ecosystem and the ability of organisms to survive. Low DO levels can be caused by pollution, excessive algal blooms, or warm water temperatures.
2. pH: The acidity or alkalinity of water can affect the availability of nutrients, the toxicity of certain metals, and the survival of organisms. A healthy pH range is generally considered to be between 6.5 and 8.5.
3. Nutrients (Nitrogen and Phosphorus): These are essential for plant growth, but excess amounts can lead to excessive algal blooms, which can deplete oxygen, harm aquatic life, and create "dead zones."
4. Heavy Metals (Mercury, Cadmium, Lead): These are toxic pollutants that can accumulate in aquatic organisms, leading to health problems and biomagnification.
5. Pesticides: These chemicals are used to control pests but can be harmful to aquatic life. Some pesticides can be persistent in the environment, leading to long-term effects.
Important Note: The specific chemicals monitored will vary depending on the type of aquatic system (lake, river, ocean), the potential sources of pollution, and the intended use of the water.
