[quote author="zubs"]Hexavalent chrome is used on all carbon steel products in the USA for rust prevention. The thicker the better the protection. The European Union has banned all hexavalent chrome products from entering their countries. The US is looking to do a similar thing, but has not passed any laws against using it yet. In Europe, all metal must be ROHS compliant. (Restrictions on Hazardous Substances)
If you have a pool of drinking water that has any plated carbon steel inside of it, it is more than likely that the plating is hexavalent (chrome-6) and will cause problems to humans.
Hexavalent chrome products are all around you. The screws in the monitor in front of you are likely plated that way. But if you don't lick it, u'll be fine.
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I remember these cooling towers being like six stories high. The
heated coolant was "sprayed" Billagio style into the unlined ponds to cool.
If the problems in Kettleman City are environmental I'd expect the source to be from here more than I'd expect a modern 25 year old hazardous waste landfill, but more than likely, it's a problem with non-existent prenatal health care.
I guess I'm guilty of just guessing too, eh?