STANFORD UNIVERSITY MEDICAL CENTER
STANFORD, CALIFORNIA 94805 « (415) 821-1200 Ye S#O/

 

 

STANFORD UNIVERSITY SCHOOL OF ‘MEDICINE
Depertment of Genetics MAR 2 7 1969

Dear Martin-

A propos your appendices in "Restoring the quality of our environ-
ment":

1) What do you know of the chemistry of the products of hygienic
chlorination of various waters used for drinking?(You mentioned phenols
as a characteristic reactant.) What about other organic contaminants;
microbial contaminants themselves? (Could any of these oxidized or
chlorinated derivatives be a public health hazard under conditions of

—
chronic intake; have you ever heard of idiosyncratically sensitive indi- yy
viduals)? 7

2) What are the standards for residual chlorine in tap water? I can
often enough smell it, in many cities. What would be the threshold flor
that. a
Cc
3) Is anything known of the uptake and body distribution of such levels om
of hypochlorite? Se
4) ... or of its effects on essential nutrients? =
oe
Sincerely, Wy
a“

Toshua Lederberg

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LT. J. P. KENNEDY, JR. LABORATORIES FOR MOLECULAR MEDICINE, DEDICATED TO RESEARCH IN MENTAL RETARDATION
MOLECULAR BIOLOGY HEREDITY NEUROBIOLOGY DEVELOPMENTAL MEDICINE