High number of algal cells in the water, leading to a green to brown color in the water. Algal blooms often lead to fish and shellfish kills due to chemical production, oxygen depletion in the water d [..]

The ability of the water to conduct an electric current (ion content).

Measure of algal content.

The amount of oxygen the water holds. Dissolved oxygen is important for the survival of aquatic organisms.

Bacteria found in the digestive tract of warm-blooded animals. Contamination of fecal coliform bateria is indicative of human, pets and/or wildlife feces deposition in the aquatic ecosystems. Although [..]

Chemicals used to control weeds and other plants not desired in yards. Atrazine and 2,4-D are widely used herbicides. Herbicides affect the photosynthesis process in plants.

Chemicals used to control insects (mosquitoes, ants, beetles, etc.). Chlorpyrifos is a common insecticide.

Chemicals used to control plant's fungal diseases (rust, mildew, etc). Chlorothalonil is a common fungicide.

Important for plant growth. High levels of nutrients can lead to algal bloom development.

The measure of the water's acidity.