In farm country, a warning to never drink the water
Tainted Water in California Farmworker Communities - NYTimes.com

But while growing up in this impoverished agricultural community of numbered roads and lush citrus orchards, young people have learned a harsh life lesson: “No tomes el agua!” — “Don’t drink the water!”
Seville, with a population of about 300, is one of dozens of predominantly Latino unincorporated communities in the Central Valley plagued for decades by contaminated drinking water. It is the grim result of more than half a century in which chemical fertilizers, animal wastes, pesticides and other substances have infiltrated aquifers, seeping into the groundwater and eventually into the tap. An estimated 20 percent of small public water systems in Tulare County are unable to meet safe nitrate levels, according to a United Nations representative.
In farmworker communities like Seville, a place of rusty rural mailboxes and backyard roosters where the average yearly income is $14,000, residents like Rebecca Quintana pay double for water: both for the tap water they use only to shower and wash clothes, and for the five-gallon bottles they must buy weekly for drinking, cooking and brushing their teeth.
It is a life teeming with worry: about children accidentally sipping contaminated water while cooling off with a garden hose, about not having enough clean water for an elderly parent’s medications, about finding a rock while cleaning the feeding tube of a severely disabled daughter, as Lorie Nieto did. She vowed never to use tap water again.