6 thoughts on “Collaborators and Other Information Sources for Flint

  1. I am glad that you are testing the water for lead. However you are misleading people when you say you are collecting a “random sample”. When people decide to send water in, they are electing to do so, that is self selection. These people may have had a neighbor with a high lead test or other previous history which makes them suspect that their water is tainted, Self-selection is not random.

    • Hi Susan,
      Thank you for your comment. Please see our FAQ page for a response to our sampling approach:

      Are these samples really considered to be random?

      We do not know who has lead pipes in Flint, and who does not. We did not recruit people who only have lead pipe. In that regard, the sampling approach is random relative to the key criteria of having (or not having) lead in the plumbing material. The actual volunteer citizens taking the samples are a self-selected group of people, but that self-selection has nothing to do with the likelihood of having a lead in water risk in their house, and is more likely related to citizens being concerned for their well-being and the well-being of their families.

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