Water is one of the world’s most valuable resources. However it is under constant threat due to urbanization, explosive population growth and pollution. The most promising efforts to stem water crisis are to treat the wastewater in a sustainable way and reuse for non-potable applications. Grey water (GW) being highly voluminous and relatively less polluted, recycling for non-potable uses like u...

Se evaluó la calidad del agua de seis manantiales que abastecen potable y riego agrícola a comunidad El Platanal, en Michoacán. realizaron dos campañas colecta, (estiaje precipitación pluvial). evaluaron parámetros fisicoquímicos, microbiológicos elementos traza. tipo predominante zona fue Ca2+-HCO3-. encontraron concentraciones Fe (0.8 mg/L) superiores los límites máximos permisibles por las n...

BACKGROUND The environmental sources of sporadic, community-acquired legionnaires' disease are largely unknown, and culturing of water sources after identification of a case is currently not recommended. We conducted a prospective study of sporadic cases of community-acquired legionnaires' disease to determine whether the environmental reservoirs could be identified. METHODS We cultured sampl...

An estimated 1 billion persons in low-income countries do not have access to improved drinking water. Chlorine, a useful water treatment agent, is less effective in turbid water, and lacks a visible effect, limiting its acceptability. A product incorporating precipitation, coagulation, flocculation, and chlorination technology (combined product) to reduce microbial, organic and heavy metal cont...

Background.  A Legionnaires' disease (LD) outbreak at a resort on Cozumel Island in Mexico was investigated by a joint Mexico-United States team in 2010. This is the first reported LD outbreak in Mexico, where LD is not a reportable disease. Methods.  Reports of LD among travelers were solicited from US health departments and the European Working Group for Legionella Infections. Records from th...

High-volume hydraulic fracturing (HVHF) has revolutionized the oil and gas industry worldwide but has been accompanied by highly controversial incidents of reported water contamination. For example, groundwater contamination by stray natural gas and spillage of brine and other gas drilling-related fluids is known to occur. However, contamination of shallow potable aquifers by HVHF at depth has ...

The effect of chlorine, monochloramine and UV disinfection on the water-borne pathogen Burkholderia pseudomallei was assessed. Persistence of B. pseudomallei was verified by MPN involving a one-step recovery procedure. Chlorine proved the most effective disinfectant with a 99.99% reduction of a 10(6) CFU/mL pure bacterial culture followed by 99.9% reduction by monochloramine and 99% reduction b...

Advanced treatment capabilities enable cities to augment drinking water supplies with purified wastewater. This image shows treated water feeding into a microfiltration unit, part of the Orange County Groundwater Replenishment System.

The Holy Grail of water technology is a full recycle of all wastewater as potable water (or water of a similar quality) after treatment by enhanced separation. Traditional wastewater treatment systems, mainly based on activated sludge treatment, have a high water loss through the sludge produced, generate a large volume of secondary waste and have insufficient quality of the product water. Newe...

BACKGROUND During a Legionnaires' disease (LD) outbreak, combined epidemiological and environmental investigations were conducted to identify prevention recommendations for facilities where elderly residents live independently but have an increased risk of legionellosis. METHODS Survey responses (n = 143) were used to calculate attack rates and describe transmission routes by estimating relat...