Which conditions indicate organic stream pollution?

Organic stream pollution typically results from the introduction of organic materials, such as sewage, decaying plants, and animal matter, into the water. This form of pollution can be identified through various indicators reflecting the health and balance of the ecosystem.

When the water has a foul odor and appears turbid, it suggests that there is an abundance of organic material decomposing in the water, leading to the production of unpleasant smells due to the activity of bacteria and other microorganisms. Turbidity can indicate a higher level of suspended solids, which often accompany organic pollution.

A decrease or complete disappearance of fish is another strong sign of organic stream pollution. Fish rely on clean and oxygen-rich water to survive. Organic pollution can deplete oxygen levels through microbial decomposition and create harmful conditions that can kill or drive away fish populations.

An increase in organisms like worms and snails can also signify organic pollution. These creatures thrive in environments rich in decaying organic matter, meaning their proliferation can reflect the presence of excess organic materials in the water.

Since all these conditions are interrelated indicators of organic stream pollution, recognizing them collectively helps in assessing the overall health of the aquatic ecosystem.