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PRIVATE WELL TESTING ACT PROGRAM - page 27 / 75

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C.

Mercury

Sources - Sources of mercury include air deposition, past pesticide use, and discharges from industrial facilities. Counties that Sampled - Mercury has been found in private wells in Southern New Jersey. Nine Southern counties were required to test for mercury: Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester, Monmouth, Ocean, and Salem. MCL - The MCL for mercury in drinking water was established by USEPA, and adopted by NJDEP, at 2 µg/l. Mercury has been linked to neurological problems. Number of wells over the MCL - A total of 215 wells (0.9%) out of 25,270 wells

tested for mercury had concentrations above the MCL. presented by county in Appendix H.

These data are

Range of Concentrations - The range of mercury concentrations varied from 0 to 114.2 µg/l. Geographical Distribution - There are no obvious geographic patterns for the mercury exceedances (See Figure 6). The highest percent of exceedances were in Camden County (2.4%), Gloucester County (1.8%), and Cumberland County (1.7%).

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