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BGS produced some groundwater quality summaries for WaterAid (some time ago now, but still useful). The one for Bangladesh is at <www.bgs.ac.uk downloads="" start.cfm?id="1277">

What you need to look for does depend quite a bit on the source. If it's deep groundwater then it's much less likely to have problems from surface-related contaminants such as nitrate and pesticides. If it's pond water, on the other hand, these could be critical elements. Good luck getting pesticides analysed effectively, though! These are very expensive to do, and sample handling and lab techniques need to be very good - no adequate field kits that I'm aware of.

Usually community water supply programmes limit themselves to the kind of range of parameters that you are already looking at, for cost reasons as well as because of a lack of ability to transport samples to good lab facilities. Again, there may be good local reasons for assessing other chemicals e.g. in areas of fluoride prevalence or metal mining.

BGS produced some groundwater quality summaries for WaterAid (some time ago now, but still useful). The one for Bangladesh is at <www.bgs.ac.uk downloads="" start.cfm?id="1277">www.bgs.ac.uk/downloads/start.cfm?id=1277

What you need to look for does depend quite a bit on the source. If it's deep groundwater then it's much less likely to have problems from surface-related contaminants such as nitrate and pesticides. If it's pond water, on the other hand, these could be critical elements. Good luck getting pesticides analysed effectively, though! These are very expensive to do, and sample handling and lab techniques need to be very good - no adequate field kits that I'm aware of.

Usually community water supply programmes limit themselves to the kind of range of parameters that you are already looking at, for cost reasons as well as because of a lack of ability to transport samples to good lab facilities. Again, there may be good local reasons for assessing other chemicals e.g. in areas of fluoride prevalence or metal mining.