The table below shows a flow chart to find both Barium and silver in the contaminanted water that was tested.
The image below shows the result that was found after testing to find what contaminant was in the water. The clear tubes in both test 1 and test 2 have C2H3O2 mixed in to find silver. Because there is no precipitation. there is no silver the the water. The cloudy fluid in the other tube from test 1 and test 2 had SO4 mixed in. The cloudy mixture shows a sign of precipitation so looking back at the flow chart above there is Barium contaminant in the water