St. Johns County
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We sampled 62 sites in St. Johns County. The max ΣPFAS in this county was 311 ng/L (or ppt) and the mean ΣPFAS was 22 ng/L. We found 19 unique PFAS present in at least one site within the county.
To use the data below, values are shown in ng/L or ppt. For more about what these concentration levels mean, see here. If you check a site and there is no PFAS data in the table below, it means that this site did not have any quantifiable levels of PFAS. Remember that these are single water grabs at one point in time, more testing is needed to confirm. |
