Record Display for the EPA National Library Catalog


Main Title Comparative Subchronic Toxicity Studies of Three Disinfectants.
Author Daniel, F. B. ; Condie, L. W. ; Robinson, M. ; Stober, J. A. ; York., R. G. ;
CORP Author Pathology Associates, Inc., West Chester, OH. ;Computer Sciences Corp., Cincinnati, OH.;Health Effects Research Lab., Research Triangle Park, NC.
Publisher cOct 90
Year Published 1990
Report Number EPA/600/J-92/122;
Stock Number PB92-164920
Additional Subjects Toxicity ; Disinfectants ; Potable water ; Tables(Data) ; Dose-response relationships ; Rats ; Chlorine ; Body weight ; Organ weight ; Water consumption ; Males ; Females ; Hematology ; Pathology ; Reprints ; Chlorine dioxide ; Monochloramine
Library Call Number Additional Info Location Last
NTIS  PB92-164920 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 12p
In separate subchronic toxicity studies, male and female Sprague-Dawley rats received three water disinfectants in the drinking water for 90 consecutive days. The treatment levels were 25 mg/L, 100 mg/L and 175 mm/L and 250 mg/L for chlorine, and 25 mg/L, 50 mg/L, 100 mg/L and 200 mg/L for both monochloramine and chlorine dioxide. Controls received carbonated (ph buffered) drinking water. Water consumption for all three compounds decreased in a dose-related fashion with increasing concentration of disinfectant, most likely due to unpalatability. None of the disinfectants caused premature deaths in any concentration evaluated. The highest dose of chlorine tested (250 mg/L) was considered to be a no observable adverse effect level (NOAEL) as no body weight, absolute or relative organ weight, hematological, clinical or histopathological changes were observed in either sex. The monochloramine produced both decreased body and organ weights in both sexes (heart, liver, lung and spleen in males; liver, spleen and thymus in females) and a small decrease in red blood cell count and serum calcium in males, 200 mg/L. Thus, the concentration (circa 9-12 mg/kg-day) was considered the lowest observable effect level (LOAEL), while 100 mg/L was designated the NOAEL.