Florida State University research found that the concentration of phytoplankton decreased over a large area of the continental shelf where reef fish spawn.
Rural towns and communities in 24 states will get financing for drinking water and wastewater treatment systems.
Previous research used data to model mercury export over a year while the new estimates were confined to three months the team spent on the Mackenzie River Delta.
Westlands Water District joined 29 other public water agencies that argued the National Marine Fisheries Service should have prepared an environmental impact statement before issuing a salmon recovery plan.
Beall has helped maintain an eight-year perfect compliance record for drinking water treatment at the Woodberry Forest School and its community.
N.A. Water Systems provided OdoWatch technology to the Roger Road Wastewater Reclamation Facility.
Pesticide residuals are regulated as pollutants under the Clean Water Act, but appliers will not need permits until after April 9, 2011, the court said.