Trichloroethylene, tetrachloroethylene, nitrates, and other chemicals in well water in the Fresno-Clovis Metropolitan Area

Archives of Environmental Health
H Kloos

Abstract

In this study, the author examined the spatial and temporal distribution of tetrachloroethylene, trichloroethylene, nitrate, and several other organic and inorganic chemicals in large community wells in the Fresno-Clovis Metropolitan Area and estimated the lifetime cancer risk associated with exposure to tetrachloroethylene and trichloroethylene. By 1992-1993, investigators found the industrial solvent tetrachloroethylene in 34 wells and found trichloroethylene in 16 wells. All wells had detectable levels of nitrate. In addition, investigators found radon, arsenic, cadmium, iron, manganese, trihalomethanes, and several other volatile organic chemicals in the wells, but only radon and arsenic posed a significant health risk. In 1995, 16 wells were closed because chemicals were found in them. Twenty-six of 248 (10.5%) active wells and 24 of 43 (55.8%) closed wells contained multiple contaminants, excluding nitrate. Between 1988 and 1993, concentrations of trichloroethylene, tetrachloroethylene, and nitrates increased in selected wells. Daily, monthly, and bimonthly variations in the concentrations of tetrachloroethylene, trichloroethylene, and nitrate were often considerable. Granulated activated carbon filtration reduced trichlo...Continue Reading

References

Dec 1, 1983·Clinical Rheumatology·A H VilppulaU I Yli-Kerttula
Aug 1, 1993·International Journal of Epidemiology·J F Viel
Feb 1, 1993·Journal of the Royal Society of Health·B A Homan, P A West

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Citations

Aug 11, 2007·American Journal of Epidemiology·Sarah J BatesJoseph N S Eisenberg
Sep 17, 2004·Archives of Environmental Health·Innocent S I Ogbu, Vitalis C Echebiri
Nov 18, 2005·Journal of Environmental Science and Health. Part C, Environmental Carcinogenesis & Ecotoxicology Reviews·Heather A Clark, Suzanne M Snedeker
Nov 1, 2013·Journal of Korean Neurosurgical Society·Hyeun Sook KimSeok Won Kim

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