water contamination – CleanTechies

Natural Gas Drilling: What We Don’t Know

It takes brute force to wrest natural gas from the earth. Millions of gallons of chemical-laden water mixed with sand — under enough pressure to peel paint from a car — are pumped into the ground, pulverizing a layer of rock that holds billions of small bubbles of gas.

The chemicals transform the fluid into a frictionless mass that works its way deep into the earth, prying open tiny cracks that can extend thousands of feet. The particles of sand or silicon wedge inside those cracks, holding the earth open just enough to allow the gas to slip by.

01/13/2010 2 comments

Water & Conservation

Contaminated Tap Water Calls for Urgent Improvement of Water Systems

written by Walter Wang

The New York Times’ latest story in its series on water contamination might make you think twice before filling up your glass from the tap. Although the law probably deems your water safe, it could still be — legally — teeming with chemicals that cause health problems “from upset stomachs to cancer and birth defects.”

The Safe Drinking Water Act, which regulates tap water, is dangerously out of date, according to the Times. The list of chemicals it regulates stalled at 91 in 2000 — even though water pollution has picked up since then and hundreds of chemicals have been associated with a risk of cancer when found in drinking water. Efforts to tighten water standards have been thwarted by industry lobbyists, according to the Times.

12/17/2009 1 comment