Maybe so, we all bring our past ideas and consider current circumstances, where I live I could drink from a spring if i wanted so maybe I don't imagine a stream as a drainage ditch with swirling foam and dead animals along the bank..out here people use the stream to water their gardens. Thirty bucks buys me thirty chicks. Just my point of reference. And close to the same price they only test for two things e coli and some flora, for human consumption...it's called a panel...lead, extra..anything else...extra. once again point of reference.