1. Group 2: Minho, Polina, Charlotte

2. Turbidity is a measure of water clarity how much the material suspended in water decreases the passage of light through the water. Turbidity = Water Clarity Turbidity is important as it directly shows the quality of water. High turbidity, more particles are inside the water. Main causes of increase in turbidity: soil erosion, waste discharge, urban runoff, and colored industrial wastes. (leaves and branches) In Tbilisi, plastic and industrial wastes

3. Turbidity Sensor Minho & Polina Turbidity sensor is often use with water quality measurement to be able to measure the amount of turbidity that is in the water sample. << Turbidity Sensor Turbidity Meter Theory >>

4. Turbidity Data Location TurbidityBefore TbilisiAfter Tbilisi Trial 1418.5429.5 Trial 2434.3386.8 Trial 3401.9373.5 Average418.2396.6

5. Analysis Aquatic communities usually function optimally at a relatively low range of turbidity. The Kura river plays an important role in terms of water resources, fish, hydropower, and recreation Large industrial facilities in Tbilisi produce manganese, ammonia, and machinery >> pollute water surface with heavy metals, oil products, phenols and other hazardous substances. The content of harmful substances in Kura river is 2-9 times higher from the standard condition of a river. High turbidity level of the Kura river shows the pollution. The turbidity value decreased because the water flow was faster. The glass bottle where sample was obtained was not cleaned.