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Sulfate usually occurs naturally in the groundwater in New Mexico because the water dissolves it out of rocks, such as gypsum. Natural levels can be increased by contamination from mines, mills, landfills, sewage and other man-made sources.
Sulfate usually occurs naturally in the groundwater in New Mexico because the water dissolves it out of rocks, such as gypsum. Natural levels can be increased by contamination from mines, mills, landfills, sewage and other man-made sources.