September 2010
Pilot study of deep-bed denitrification filtration using different sources of siliceous media 
Total cost of ownership and energy efficiency 
April’s nearly 200-million-gal BP oil spill has received significant coverage in the general media. Here WWD and Chris Piehler of the Louisiana Department of Environmental Quality (DEQ) bring you up to speed on the spill’s water quality impacts and...
It is hard to imagine that only about 30 years ago thousands of cities around the country discharged raw sewage into rivers, lakes and oceans without many regulatory restrictions. A lot has changed in the last few decades. Regulations now require that...


Raleigh, N.C., has added a small increase to water bills as a permanent watershed protection fee. Do you agree with this idea?: