Not sure why you’re getting downvoted (although you’re username would certainly give the impression you’re just defending musk).
The information you linked to does indeed cast doubt on the validity of the report. Corrected information will be needed before concrete conclusions can be drawn.
I hate Musk as much as the next person, and definitely wouldn’t be surprised if he was dumping chemicals in the water. But that doesn’t mean we should let confirmation bias cloud our ability to think critically.