The U.S. Environmental Protection Agency has re-opened the door for developing a standard for perchlorate in drinking water. Perchlorate is a naturally occurring substance and also a man-made chemical used as an oxidizer in rocket fuel and fireworks. In October 2008, EPA published a preliminary determination not to regulate the substance. But the agency said on Aug. 5 it wanted to reassess perchlorate’s impact on public health. In large doses, it can affect the thyroid gland. Alan Roberson, the American Water Works Association’s director of security and regulatory affairs, says a drinking-water standard for perchlorate probably would require utilities to
The market is generally healthy and steadily growing, and margins are up for large specialty contractors. Further, advances in design tools and owner demand for collaboration are giving subcontractors a seat at the table early on in projects.