Protection of Aquatic Life

Anthropogenic stresses, introduction of chemicals into water, affect many species of aquatic flora and fauna.

Parts that concern to enviromentalis are

• Dissolved oxygen (kill fish at low concentration)
• Phosphates, ammonium and nitrate (cause significant changes in community strcuture)
• Heavy metals and many synthetic chemical (ingested and absorbed by organisms cause bioaccumulated in body)
• Pollutant (cause carcinogenic, reproductive and developmental effects)

Stress in River Basin

1. Rapid urban development

2. Increase Pollution Loads - Sewage

3. Poor water quality