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This seems like an excellent list to start out with. I would suggest you consider changing your microbial testing from fecal coliform to E. coli, which is the most associated with diarrheal disease (see recent study by Gruber et al for the latest evidence on this). There are several low cost field methods now for this. We at mWater have a kit made up of off-the-shelf parts. Also see our resource guide on this for more options. Good luck! John