The National Primary Drinking Water Regulations (NPDWR) are legally enforceable primary standards and treatment techniques that apply to public water…
Photo: The Rocky Mountains rise behind the Denver skyline. Charlie Riedel/AP As Western states grapple with drought, Westminster, Colorado, has…
Photo: © Getty Images Before the Clean Water Act was passed in 1972, our nation’s waters were in trouble. Lake…
Photo by Will Huntsberry The city isn’t sure what 192,000 of its water lines are made of. No other major…
Photo: Pennsylvania's "Category 5" streams include the Juniata and Susquehanna rivers and many creeks, such as the Yellow Breeches in…