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PUBLIC HEALTH SERVICES <br /> SAM JOAQLIV COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION y r � <br /> Ernest M. Fujimoto, M. D., M.P.H., Acting Health Officer :. <br /> 304 East Weber Avenue, Third Floor + Stockton, CA 95202 • c4 ... ... �� <br /> � FOR� <br /> 209/468-3420 <br /> May 28, 1997 <br /> Doris Catramis <br /> 23346 Fredrick <br /> Ripon CA 95366 <br /> Re: DBCP in your Water Wells <br /> @ 23346 Fredrick, Ripon, CA (MS-96-I5) <br /> A soil suitability study was submitted by Quality Control Inspection Inc., in which a test for <br /> the chemical Dibromochloropropane (DBCP) was tested for and showed results of 6.7 ug/L <br /> (parts per billion) in your domestic/irrigation well. <br /> The State Department of Health Services adopted a standard of 0.2 parts per billion (ppb) for <br /> DBCP in public drinking water systems in 1989, however, private well owners are not legally <br /> required to meet this standard. As a precaution for yourself and family, we would suggest <br /> that you have the domestic well tested annually to verify if the above described chemical <br /> raises above state drinking standards. <br /> If your private and/or agricultural well analysis for Dibromochloropropane (DBCP) exceeded <br /> the State standard of 0.2 ppb, the following alternatives are being provided for your guidance: <br /> 1. As a temporary measure, it is recommended that bottled drinking water to be <br /> used. <br /> 2. In cases where exposure may continue indefinitely, such as with contaminated <br /> private wells, installation of a water treatment device, such as a carbon filter, <br /> may be advisable. However, using bottled water or installing a water treatment <br /> device at the kitchen water tap, will not stop exposure to DBCP if it is in you <br /> private water supply. Most treatment units sold for home installation only treat <br /> water at the point of use, such as the kitchen faucet, and do not prevent <br /> exposure through skin contact, bathing or inhalation. As a result, point of entry <br /> filters, which treat water for the entire house, are recommended because they <br /> remove all potential sources of exposure. The "granular activated carbon" filter <br /> is the recommended water treatment device in this case. It operates by passing <br /> the well water through a charcoal bed, thereby absorbing the DBCP <br /> contaminant. Water treatment equipment suppliers and installers are Iisted in <br /> your phone directory yellow pages under "Water Filtration & Purification <br /> Equipment". <br /> 3. A replacement well is also an alternative for providing uncontaminated water. <br /> cc: Quality Control Irlsp.,eStions,oIn1c.Joaquin County Health Care Services <br /> Attn: Don Chesney <br />