I could not copy and paste this file so it would post correctly without converting the file. I do not know how to convert pdf files to Word. so here is the link. Any help in how to convert pdf files to Word would be appreciated. http://www.pssurvival.com/ps/water/Systems/Try_A_Gravity_Flow_Water_System_By_Don_Fallick_1995.pdf
and a couple more pdf files with pertinent info: http://www.agf.gov.bc.ca/resmgmt/publist/500Series/590304-5.pdf http://praqua.com/wp-content/uploads/2012/01/nb2009_09.pdf
I wish you would republish your Water Systems Posts of last winter.... the ones in color, those were VERY Good.....