Samples of untreated groundwater from 1255 domestic drinking-water wells and 242 public supply wells were analyzed as part of the National Water-Quality Assessment Program of the U.S. Geological Survey between 1992 and 1999. Wells were sampled to define the regional quality of the groundwater resource and, thus, were distributed geographically across large aquifers, primarily in rural areas. Fo...

objective: the world is currently facing with various problems including water and soil pollution as well as a major threat to the health of the citizens due to the advancement at human civilization, technology development, pesticides and chemical fertilizers application, the increasing exploitation of natural resources by the agricultural sector and the increasing usage of fossil energy. there...

background: the indispensable use of agrochemicals has created serious threats for earthworms abundance and their population therefore, several earthworm protocols have gained acceptance for use in tests to assess the effects of soil chemicals on soil organisms. dichlorovos, an organophosphorus pesticide, is one of the widely used pesticides in agricultural fields of m.p., central india. the ai...

Agricultural activities cannot be separated from the use of pesticides to control plant-disturbing organisms. The mercury (Hg) content in naturally degraded on agricultural land, so it will carried off by run-off into waters. Pesticide’s activity along Sumur Beremas River has an effect increasing concentrations river. This study aims analyze pesticide and capacity river pollution loads. was ana...

The surface water quality was investigated in the Córrego Sujo watershed, located in the municipality of Teresópolis, a mountainous region in the state of Rio de Janeiro, Brazil. The emphasis focused on inorganic parameters of water, since there are applications of pesticides in agricultural cultivations. The natural and anthropogenic contributions of the study area were monitored monthly in ei...

Background: The indispensable use of agrochemicals has created serious threats for earthworms abundance and their population therefore, several earthworm protocols have gained acceptance for use in tests to assess the effects of soil chemicals on soil organisms. Dichlorovos, an organophosphorus pesticide, is one of the widely used pesticides in agricultural fields of M.P., Central India. The ...

There is an increasing concern regarding the widespread use of pesticides and their potential impacts on public health. Pesticides differ from other chemical substances because they are toxic chemicals deliberately spread into the environment with the aim of controlling undesired living species. Since their toxicity may not be completely specific for the target organisms, their use may pose a r...

the purpose of this study is to evaluate financial participation of farmers to reduce the adverse environmental effects of contaminated water by using contingent valuation approach and tobit model by heckman's two stage. to achieve the desired goal, 100 questionnaires collected by a random sampling from farmers of kashaf- rood basin in mashhad city in 2014. results showed that variables of age,...

Hydrological and pollutant fate models have long been developed for research purposes. Today, they find an application in integrated watershed management, as decision support systems (DSS). GIBSI is such a DSS designed to assist stakeholders in watershed management. It includes a watershed database coupled to a GIS and accessible through a user-friendly interface, as well as modelling tools tha...

When surface water is used to supply urban settlements, exhaustive studies of the composition of the source are necessary to ensure its potability, and to assess the possible environmental effects associated with contamination by pesticides. The present study centers on the pesticide content of the waters from a section of the Guadalquivir River and its affluents in southern Spain. At many of t...