Patterns of arsenic release in drinking water distribution systems

Biofilms in drinking water distribution systems

Evaluation of Cadmium, Arsenic and Mercury Concentrations in the Drinking Water Distribution Network in Ardabil City in 2018

Background & objectives: Heavy metals enter water sources in many ways and cause hazards such as poisoning and carcinogenesis in the living organisms. This study aimed to investigate the concentration of heavy metals (arsenic, mercury, and cadmium) in the Yamchi Reservoir Dam and Ardabil drinking water distribution network in high and low rainfall seasons in 2018. Methods: In this cross-sectio...

Survey the Nitrate Concentration in Drinking Water Distribution Systems of Kashan County, Iran

High concentration of nitrate is a prevalent problem in water resources. Untreated wastewater due to municipal, industrial and agricultural activities is the main potential source of nitrate contamination of groundwater and surface water. The maximum permissible level of nitrate concentration has been established to be 45 mg/L by WHO and US–EPA. Health problems, such as Methemoglobinemia in bab...

Measurement of Fluoride Concentration in Semnan Drinking Water Distribution

Background: The existence of fluoride ion in potable water has distinctive effects on human health. Fluoride is attracted by positively charged calcium in teeth and bones due to its strong electro-negativity which results in dental, skeletal, and non-skeletal forms of xuorosis and associated health complaints in children as well as adults. Methods: Water samples from groundwater used for dri...

Fungi Occurrence Assessment in Drinking Water Distribution Systems and Its Relationship with Fecal Indicator Bacteria

Introduction: As recommended by World Health Organization, consumption of the fungal contaminated water does not cause to serious infection, but may lead to healthy or aesthetic problems. The aim of this research was to assess the occurrence of fungi in water and its relationship with fecal indicator bacteria. Materials and Methods: 110 water samples were collected from different location of w...