I call BS on that defense council nerd. The company I work for tests most of those brands on that video and the EPA is involved along with the Dept of Health. The amount of accreditation and regulation is staggering. We are the second largest environmental laboratory in the country with the largest analyte list accreditation in the country. We have to be certified and accredited in each and every state that we receive samples from. Drinking water fails approval if only 1 microbe of bacteria is detected that is why it is tested by the absence/presence method called MMO-MUG. There is no need to do a membrane filtration like in regular ground water monitoring wells due to the stringent regulation. There, now that I have bored everyone to tears, I will shut up now.