Full view of the turbidity tubes.

What is turbidity?

Turbidity is a water quality parameter in drinking water, provision, and treatment. It measures of the cloudiness of water which is usually how much sediment is in the chosen sample. The higher the turbidity, the harder it is to see through the water. The formula for determining turbidity is Depth (in cm)=244.13*Turbidity(NTU)(to the -.662 power)For instance drinking water has a turbidity of 0-20.

Equipment used:

Turbidity tubes that the students made themselves with a pair of clear polycarbonate flourescent tubing, drain stoppers, a sharpie, clear tape and a meter stick.


month (below),testing  site –> L1 L2 L3 L4 L5 R1 R2 R3 R4
October <5NMu’s <5NMu’s <5NMu’s <5NMu’s <5NMu’s <5NMu’s 10NMu’s 13NMu’s <5NMu’s
November <5NMu’s <5NMu’s <5NMu’s <5NMu’s <5NMu’s <5NMu’s <5NMu’s <5NMu’s <5NMu’s
December . . . . . . . . .

Results were not collected in December because the Lake was frozen. In January we will be ready with ice augers.