> the water ... filtering process ... the water in the aquifer is clean Clean(er) ... maybe ... nowadays nitrates, pesticides/herbicides, pfas/pfoas, industria

> the water ... filtering process ... the water in the aquifer is clean Clean(er) ... maybe ... nowadays nitrates, pesticides/herbicides, pfas/pfoas, industrial chemicals (solvents, heavy metals, volatile organic compounds), pharmaceuticals (prescription drugs, over-the-counter medications), lead, arsenic, mercury, and cadmium (through industrial activities, mining operations, and improper waste disposal), chlorinated solvents, such as trichloroethylene (TCE) and perchloroethylene (PCE), all were detected in the groundwater. Nothing is "clean" anymore. Not the arctic, not the tops of the mountains in the natural reserves, not the remote islands, not the deep underground.