I am looking for any water dataset for pollutant or contaminant in water (like mercury, arsenic, etc) and I need the dataset include data of ph, do, ec, orp, and temperature as well. Where I can find those things? I haven't found a relevant dataset.


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You can obtain some data about water quality and contaminant from USGS Water Quality databases:

http://waterdata.usgs.gov/nwis/qw http://www.waterqualitydata.us/).

It contains many water quality characteristics for the US territory - these are large and diverse data sets. If you're not familiar with the formats & databases, consider paying someone to do the data wra

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