Pennsylvania is one of the only states with no standards for rural water well construction, meaning multiple other factors could be contributing to the problems.

NPR: Cause Of Off-Color, Fetid Water Eludes Pa. Town

And its businesses will include the distribution of water and electricity, as well as construction, metal refining, insurance, television, chemicals, property and consumer credit.

ECONOMIST: Suez and Lyonnaise des Eaux

She has stakes in construction firms, as well as water and environmental-protection companies.

WSJ: City Lights Shine for Equities in China

Safer well construction of the kind normally practiced today might have prevented any contaminants from leaking into the water supply.

WSJ: Review & Outlook: The EPA's Fracking Scare