Hundreds of people in the US so far have recently developed a specific type of food poisoning that's causing watery and occasionally explosive diarrhea.
A reverse osmosis system is probably your best bet. You can pour pond water in them and run lab tests with the results. Its basically distilled water though, so you want to make sure you get your minerals somewhere.
A reverse osmosis system is probably your best bet. You can pour pond water in them and run lab tests with the results. Its basically distilled water though, so you want to make sure you get your minerals somewhere.