What reasons could there be for different water sample results at four sites along a river?
(see files attached with data)
In your data on water samples there are a number of parameters that have an effect on the quality of water used for human consumption. The pollution boards operated by various levels of governments monitor regularly the environment as a whole. When a river goes downstream it comes across with a number of activities which are both natural and man-made. For example if the river is passing through an area which is abundant in radioactive materials it will carry with it thr useful and (also toxic) chemicals which have effect on the population ...
Solution explains reasons for water samples being different at different areas of the same river in 385 words.