I would suggest that a slightly better firehose analogy is that you're drinking from a firehose that includes multiple streams of good drinking water, urine and

I would suggest that a slightly better firehose analogy is that you're drinking from a firehose that includes multiple streams of good drinking water, urine and poison all combined together. When you drink from that firehose, what do you think the odds are that you'll just get the drinking water part of the stream?