our city is saying our water contains 29 mg/l of cadmium

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our city is saying our water contains 29 mg/l of cadmium

Postby get llc » Fri Mar 13, 2009 7:18 am

we understand that is 29 ppm, but they also give us misinformation using the term as grams mcg get us confused.
get llc
 

Re: our city is saying our water contains 29 mg/l of cadmium

Postby Guest » Fri Mar 13, 2009 6:47 pm

get llc wrote:we understand that is 29 ppm, but they also give us misinformation using the term as grams mcg get us confused.


There might be some unit confusion here. "mcg" is NOT an approved symbol in the International System of Units, but is widely used by the medical community in the US instead of the correct symbol "µg" (microgram).

29 ppm or 29 mg/L would be a VERY serious overexposure. The EPA sets a limit of 5 ppb or 5 µg/L for drinking water. So even if they said 29 mcg/L, this is nearly six times the limit.
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