I don't think you have to get that fancy if you are ever in doubt rig a simple active charcoal filter with sand and rocks to filter out the particles then boil. To get active charcoal just burn wood then crush charcoal into powder

Taylor or Hach

Buy a TDS water tester. They're less than twenty bucks and good investments as a starter water test kit. If that picks up anything, anything at all, you'll get numbers to let you know what action you should take next.