Document km6DBkgVq2oJL5x9rnxwdNKNB

FILE NAME: ZW^W^ DATE: DOC#: W^ DOCUMENT DESCRIPTION>ZZ,Z:ZD NATIONAL r,:E. 1.lfl:R FOR URBA~ ANDl"-1O'.',":"Al"L t-1ALTH 222 EAST .:EN~R.\L PA.qK >N/4.Y C/N,:lPIATI Je110 4':."')2 s. n.~ _ DEPARTMENT OF HEALTH. EDUCATION. AND WELFARE PUBLIC HEALTH SERVICE 1 V r ' l ~ . u,,t/4U-~-// \_) 0-, REF'ER TO December 7, 1967 Johns-Manville Company 22 East 40th Street New York, New York 10016 Gentlemen: We have had an inquiry from a local health officer about the carcino~enic effect of asbestos from A-C pipe in drinking water. We will decide about the effects of ingested asbestos, but would like to know if you have any data about the amount of asbestos that might occur in drinking water. How much is introduced during pipe repairs and tapping? Does solution of the calcium out of the cement into the water release asbestos fiber? Do you know anything about a report "-that near Memphis, Tennessee, there was aperiod in one locality w:1ere the pH in the water was 10 or 11 and this resulted in a solution in the cement component of the pipes to such an extent that the water became milky-" that we have been asked about. I will appreciate your comments on this problem. Sincerely /'" ~; .. '------___, Leland J. McCabe Chief, Disease Studies Water Supply and Sea Resources Program