Disinfection Byproducts

<body topmargin=0 leftmargin=0 marginheight=0 marginwidth=0> <table cellpadding=0 cellspacing=0 border=0><tr> <td valign="top" height=82 BGCOLOR="#111111" TEXT="#F7F7FF"> <div> <FONT SIZE="5" COLOR="#33CCFF" FACE="Comic Sans MS" ><B>Seven  Creeks  Roadside  Spring Water</B></FONT><B>     |     </B><A HREF="index.htm" TARGET="_top" TITLE="Seven Creeks Roadside Spring Water"><B>home</B></A></div> <div> <A HREF="id427.htm" TARGET="_top" TITLE="Health "><B><IMG SRC="0720e0e0.png" border=0 width="14" height="14" ALT="up" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></B></A><B>  </B><IMG BORDER="0" SRC="1x1.gif" HEIGHT="14" ALIGN="BOTTOM" HSPACE="0" VSPACE="0" WIDTH="14"><B>    </B><A HREF="id433.htm" TARGET="_top" TITLE="Roman Water System"><B><IMG SRC="0710e0e0.png" border=0 width="14" height="14" ALT="previous" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></B></A><B>  </B><A HREF="id435.htm" TARGET="_top" TITLE="Chemicals in Tapwater"><B><IMG SRC="0730e0e0.png" border=0 width="14" height="14" ALT="next" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></B></A></div> <div> </div> </td> </tr><tr> <td valign="top" height=398 BGCOLOR="#111111" TEXT="#F7F7FF"> <div> <I>Disinfection Byproducts</I></div> <div> Excerpts from </div> <div> What Health Care Providers Should Know</div> <div> Drinking Water Fact Sheet  #2</div> <div> provided by Physicians for Social Responsibility 1101 14th Street,NW , Suite 700 , Washington, DC 20005</div> <div> <B> <A NAME="disinfection_byproducts"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B><B>Disinfection Byproducts</B></div> <div> Disinfection byproducts (DBPs) are among the most ubiquitous contaminants found in drinking water. They are formed by reactions between naturally-occurring organic matter in water and the chlorine that is commonly added to disinfect drinking water supplies. Brominated byproducts are also widely found, and are formed by substitution reactions between chlorinated DBPs and naturally-occurring bromine. Treatment with ozone also results in the formation of bromate. Several recent epidemiological studies suggest a link between DBPs and bladder cancer,10, 11, 12 colon and rectal cancer,13, 14 and brain cancer.15 In a meta-analysis of cohort and case-control studies, Morris, et al. found an association between consumption of chlorinated drinking water and increased risk for bladder and rectal cancer.16 The EPA has estimated that 2-17% of bladder cancer cases in the U.S. are attributable to DBP exposure (1100-9300 cases/year).17 For additional information, please refer to PSRs fact sheet Disinfection Byproducts and Drinking Water. </div> <div>  </div> </td> </tr></table></body>