See my latest video on "How to Test Your Drinking Water for Nitrates and Nitrites" at http://youtu.be/6PSuzGuRKhw
Nitrates are dangerous at levels over 10 ppm, and nitrites are dangerous with levels over 1 ppm. From fertalizer runoff and leaking sewage. Can cause severe illness or death in children under 6 months.
Just published a video on testing water for bacteria using a PurTest Bacteria Test Kit. It's simple to do, though you need to wait 48 before the results are ready. See the video on Youtube at:
Pine tree branch as bacteria water filter
From MIT News February 26, 2014. If you need safe drinking water but don't have a bacteria filter, MIT News article states: peel a pine tree branch and pour lake water through it. It will trap bacteria, and pass safe water. See
The EPA is offering Webcasts on water quality. You must sign up for access. This one is on using cover crops and other conservation systems to improve water quality in agricultural landscapes.