http://en.wikipedia.org/wiki/Bristol

"pH: 6.0
Aluminium: 10.00 µg/L
Barium: <10 µg/L
Strontium: 0 mg/L
Titanium: 0 mg/L
Manganese: 3.0 µg/L
Iron: <10 µg/L
Copper: <10 µg/L
Zinc: 10 µg/L
Arsenic: <1.0 µg/L
Sulphate: 3 mg/L"
http://www.chemtrailsprojectuk.com/evidence/rainwater-test-kit-results-map/
http://www.chemtrailsprojectuk.com/wp-content/uploads/2014/06/4276.png