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F1 <br /> PUBLICYEA DICES ApU!N <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Ernest M. Fujimoto, M. D., M.P.H., Acting Health Officer <br /> 304 E. Weber Ave., Third Floor • P. O. Box 388 • Stockton, CA 95201-0388 <br /> March 25, 1996 209/468-3420 <br /> Patrick & Laura Murphy <br /> 9122 East Peltier Road <br /> Acampo, CA 95220 <br /> Regarding: DBCP in Your Water Wells (MS-95-8) <br /> A soil suitability study was submitted by Steve Mindt, in which a test for the <br /> chemical Dibromochloropropane (DBCP) was tested for and showed results of 2.88 <br /> UG/L (parts per billion) in your domestic well. <br /> The State Department of Health Services has adopted a standard of 0.2 parts per <br /> billion (ppb) for DBCP in public drinking water systems in 1989, however, private <br /> well owners are not legally required to meet this standard. As a precaution for <br /> yourself and family, we would suggest that you have the domestic well tested <br /> annually to verify if the above described chemical raises above state drinking <br /> standards. <br /> If your private and/or agricultural well analysis for Dibromochloropropane (DBCP) <br /> exceeded the State standard of 0.2 ppb, the following alternatives are being <br /> provided for your guidance: <br /> 1. As a temporary measure, it is recommended that bottled drinking water is to <br /> be used. <br /> 2. In cases where exposure may continue indefinitely, such as with <br /> contaminated private wells, installation of a water treatment device, such as <br /> a carbon filter, may be advisable. However, using bottled water or installing <br /> a water treatment device at the kitchen water tap, will not stop exposure to <br /> DBCP if it is in you private water supply. Most treatment units sold for home <br /> installation only treat water at the point of use, such as the kitchen faucet, <br /> and do not prevent exposure through skin contact, bathing or inhalation. As <br /> a result, Rooint of entry filters, which treat water for the entire house, are <br /> recommended because they remove all potential sources of exposure. The <br /> "granular activated carbon" filter is the recommended water treatment device <br /> in this case. It operates by passing the well water through a charcoal bed, <br /> thereby absorbing the DBCP contaminant. Water treatment equipment <br /> supplier and installers are listed in your telephone directory yellow pages <br /> under "Water Filtration & Purification Equipment". <br /> A Division of San loaquin County Health Care Services <br />