Hidden elements in drinking-water lines can shed large amounts of lead, a toxic heavy metal. And it’s quite legal, even if it does skirt the intent of federal regulations. University researchers, who ...

It takes a large number of control valves to run a power plant, and while some valves are more critical to plant operations than others, it always follows that when a severe service valve fails, the ...

Inspecting the system of thousands of valves that control the flow of drinking water through Atlanta’s underground pipes will be a “huge undertaking” after years of neglect, the head of the Department ...