Pennsylvania's one million private wells are not monitored by any government agency and no maximum contaminant levels are enforced for private systems. There are 38,000 private wells in Lancaster County alone.
Animal waste and nitrogen-based agricultural fertilizers contribute to nitrate runoff, which ends up in creeks, streams, rain and, eventually, water systems. Nitrate, that mix of nitrogen and oxygen, can cause serious health problems if it's too concentrated.
Jane Worthington moved her grandkids to protect them from oil and gas wells—but it didn't work. In US fracking communities, the industry's pervasiveness causes social strain and mental health problems.