Chemical in the water, but if you want an actual scientific measurement, you go here to the regular reports being published now by the state. and you can see in these reports that they tested the water at the elementary school last week on thursday. and that sample came back nd, not detectable. they wrote nd twice there for lab number one and two. that toxic chemical last week at that school was not detectable. yesterday they tested it again. east water fountain, not detectable. but down the hall at the west water fountain, same school, this time the sampling came up positive. lab number one, ...