In many cases, nephelometry also causes problems because people will only be able to test the water samples at any given point. It is possible that the turbidity of a body of water is going to change with time. However, people will not necessarily know that this is the case unless they take multiple samples over an extended period of time. This can work and this can help scientists get around some of the basic issues with nephelometry. However, this still means that continuous water quality monitoring will prove to be unsuccessful.
Scientists and water quality monitoring professionals will use nephelometry and it is certainly a great method. However, it is still important to keep some of its limitations in mind.