Radiological, chemical, and microbiological risks in drinking water from the Brazilian semiarid: Public health implications.
This study presents a regional survey of treated and untreated water sources in the Seridó Ocidental region of Paraíba, Brazil. A single-sampling campaign was conducted to evaluate chemical, microbiological, and radiological parameters against national standards. High concentrations of sodium (up to 5000 mg L-1), chlor...