The sudden appearance of toxic cyanobacteria (CB) blooms is still largely unpredictable in waters worldwide. Many post-hoc explanations for CB bloom occurrence relating to physical and biochemical conditions in lakes have been developed. As potentially toxic CB can accumulate in drinking water treatment plants and disrupt water treatment, there is a need for water treatment operators to determi...

Considering their health effects and potential future regulations, it is critical to understand the formation and control of N-nitrosodimethylamine (NDMA) in source waters and drinking water treatment plants (WTPs), and to develop strategies for the removal of its precursors. Furthermore, the impacts of various temporal and climatic events (e.g., drought periods, run offs or major rains, algae ...

most regions of iran are confronted with inadequate supply and excessive demand of water in agriculture sector mainly resulting from a high difference between water providing cost and its price. coping with such a challenge needs to determine the water price based on the economic principles and its value in agricultural production. the aim of this study was to determine the economic value of th...

Andreas Kolch* Managing Director and Partner, HYTECON GmbH, Humboldtstrasse 11, 32052 Herford, Germany Email: [email protected] DEVELOPMENT OF THE DVGW WORK SHEET The potential of UV for the disinfection of drinking water was clearly identified in Europe in the middle 1980’s, when a group of researchers and companies from Germany, Austria and The Netherlands collected data to establish ...

EXTENDED ABSTRACT Hexavalent chromium [Cr(VI)] has long been recognized as a potential carcinogen, via the inhalation route while nowadays, there is an increasing concern that Cr(VI) is also carcinogenic by the oral route of exposure. According to this, governments apply more stringent regulations for chromium species. There are several discussions and intentions to lower the current maximum pe...

Abstract: The impact of pesticide residues on human health is a worldwide problem, as human exposure to pesticides can occur through ingestion, inhalation, and dermal contact. Regulatory jurisdictions have promulgated the standard values for pesticides in residential soil, air, drinking water, and agricultural commodity for years. Until now, more than 19,400 pesticide soil regulatory guidance v...

The 1996 Amendments of the Safe Drinking Water Act (SDWA) requires that new drinking water regulations exhibit sufficient meaningful risk reduction. As called for in the SDWA Section 1412(b)(1)(A) General Authority, “...in the sole judgment of the Administrator, regulation of such contaminant presents a meaningful opportunity for health risk reduction for persons served by public water systems....

OBJECTIVE Because of emerging evidence that early-life exposure to the solvent tetrachloroethylene (PCE) has long-lasting neurological consequences, we examined the risk of unintentional head injuries following prenatal and childhood exposure to PCE-contaminated drinking water. METHODS Participants provided information on head injuries and other relevant characteristics in a self-administered...

The adrenal cortex plays a key role in the regulation of metabolism, salt and water homeostasis sex differentiation by synthesizing glucocorticoid, mineralocorticoid androgen hormones. Evidence exists that angiotensin II regulates adrenocortical function it has been contended peptides non-canonical branch renin system (RAS) might also modulate steroidogenesis adrenals. Thus, aim this review is ...