The water turbidity testing equipment we designed could measure the amount of light transmission of polluted water by the penetration of light in the water. We used simple components like flashlight and lumens meter to manufactured the water transparency tester. After numerous improvements, compare between water transparency and turbidity detector, as well as practical applications, proves that it can achieve the effect of water turbidity testing. It’s even better than turbidity tester when it comes to high turbidity water. 

Water Transparency Testing Result at Plum Tree Creek

Water Transparency Testing Result at Plum Tree Creek

Analysis：

Origin-pollution free

Headstream-mild pollution

Midstream-mild polluted

Downstream-serious polluted

There are significant differences between high and low flow. The serious pollution at downstream were caused by domestic sewage.