aims: bottled water is widely used in many countries and more than 100 different brands of bottled water are produced in iran. the aim of the present research was to assess the chemical compound of some iranian brands of bottled water and compare them with the mention information on their labels.     instrument & methods: this descriptive study was performed during march to december 2012 on the...

Water quality index is considered as an effective indicator of the health of water. With the climate change scenarios the quality determination of wetlands becomes a burning issue. In India different wetlands have different set of regional and local teething troubles regarding their health. In the present paper a framework is set for water quality assessment and comparison between four wetlands...

To address water quality standards needed to prevent accelerated eutrophication, many states in the United States have developed effects-based standards related to nutrients. In many cases, this has resulted in specific standards for Secchi transparency (ST) and phytoplankton biomass measured as sestonic chlorophyll (chl-). The state of Arkansas recently adopted its first effects-based water qu...