There are a ton of images loading (besides the template specific ones) Perhaps you could try optimizing a few of them a bit more and/or eliminate a few. For example the images listed below may be able to be a bit more optimized:
www.cleanmywater.com/auctions/header-cs.gif 
; (about 90k)
www.cleanmywater.com/images2/home-page/Alec-drinking.png 
; (about60k)
This is just a few I noticed after a very brief peek at the site. You may be able to find a few more that could use a tweak.
You can also eliminate any unused javascript that loads. One of them I see loaded but do not see it in use is the
reflection.js (I may be overlooking where it is implemented please forgive me if I am wrong)
If you are indeed not using or plan on not using the reflection.js just remove this line of code from your template index<script type="text/javascript" src="http://cleanmywater.us/templates/rt_vortex/js/reflection.js"></script>
Every little bit helps when attempting to optimize your site. Get rid of anything that you do not have to use.
Just my 2cents