Re: Chlorine in Drinking Water

[Alan Muller <amuller@dca.net>]

At 09:25 PM 11/28/99 -0500, Jeffrey A. Hollender wrote:
>A customer of our has asked,
>
>"What levels of chlorine are acceptable in drinking water?

This depends on where you are and who you are talking to, and whether you base the decision on aesthetics, or health effects, or whatever.
>
>Why is it that cities, in their annual drinking water quality reports,
>are not required to list chlorine as a contaminant though they are
>required to list bromodichloromethane, chloroform and dibromomethane?"

Generally water suppliers are *supposed* to maintain a chlorine residual in their systems for disinfection purposes.  Likewise, fluoride, a highly toxic material, is added intentionally.  Thus, I suppose, not regarded as contaminants as they are "supposed" to be there.

Alan Muller
"Innumerable suns exist; innumerable 'earths' revolve around these suns 
in a manner similar to the way the seven planets [sic] revolve around our 
sun. Living beings inhabit these worlds."

GIORDANO BRUNO, 16th century philosopher 
-imprisoned and burned at the stake for his"astronomical heresy"