Tap water not all good


	Tap water not all good

echines

8-14-2007 8:48 AM

314 views

tags:

water, safety, toxicology

echines says:

From the angry toxicologist on scienceblogs. For a bit of balance.

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/62543c2f-ab19-482c-925b-61494f189158/B23E75E6-A7F9-48C2-8CD9-3CBC02520E0C/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://scienceblogs.com/angrytoxicologist/2007/08/tap_waters_low_blow.php" href="http://scienceblogs.com/angrytoxicologist/2007/08/tap_waters_low_blow.php" style="font-size: 11px;">scienceblogs.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://scienceblogs.com/angrytoxicologist/2007/08/tap_waters_low_blow.php">Most cities and towns use chlorine or bromine to disinfect water. When the water is polluted, chlorine or bromine reacts with the pollution (agricultural runoff is probably a bigger problem here than traditional industrial pollution) to create what are called disinfection by-products (DBPs). DBPs are associated in humans with adverse pregnancy outcomes (usually miscarriage)*. Since DBPs damage DNA and are considered carcinogens at some level, researchers thought that it was likely that DBPs would affect sperm as well. Rodent studies show that some DBPs do harm sperm quality; however, there hasn't been a human study on sperm quality in response to DBP exposure. 
A <A href="http://www.ehponline.org/docs/2007/10120/abstract.html">study published recently in Environmental Health Perspectives</A> looked at 228 men who were in a study of couples to look at DBP-induced spontaneous abortion. They were grouped into three levels of exposure:</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://scienceblogs.com/angrytoxicologist/2007/08/tap_waters_low_blow.php"><div align="center"><img src="http://content9.clipmarks.com/blog_cache/scienceblogs.com/img/7A8108E2-870F-4D40-B42E-33F04A82EDF7" alt="" /></div></blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/B23E75E6-A7F9-48C2-8CD9-3CBC02520E0C/blog/" title="blog or email this clip"><img src="http://content6.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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