title: [Water pollution in sources close to oil-producing fields of Bolivia].
abstract: OBJECTIVE
  to determine the concentrations of petrochemical compounds in the drinking water sources of communities located near oil-producing fields in the Bolivian Chaco region.
  
  
  METHODS
  data were collected on total petroleum hydrocarbons (TPH), 16 polycyclic aromatic hydrocarbons (PAH), including benzene, toluene, ethylbenzene, and xylenes (BTEX), and 22 metals in samples from 42 sources of water for human consumption located less than 30 km from an oil-producing field. Distribution of the concentration and adherence to the standards contained in the Bolivian, European, and United States regulations, as well as the recommendations of the World Health Organization, were analyzed.
  
  
  RESULTS
  in 76.19% of the samples, some petrochemical contaminant was found in concentrations higher than permissible in any of the four sets of regulations mentioned. The water samples with the highest contamination levels were from faucets and rivers. The most common contaminants were TPH, PAH, aluminum, arsenic, manganese, and iron.
  
  
  CONCLUSIONS
  communities within a 30 km radius of the oil-producing fields in the Bolivian Chaco region consume water with TPH, PAH, and metal concentrations well above the levels permitted in the Bolivian regulations and international standards, putting the public health of their residents at serious risk.
authors.affiliation: Universidad Rey Juan Carlos, Facultad de Cienciasde la Salud, Departamento de Medicina Preventivay Salud Pública e Inmunología y MicrobiologíaMédica. Madrid, España. silvia.alonso@urjc.es
authors.forename: Silvia
authors.initials: S
authors.lastname: González Alonso
authors.forename: Jesús
authors.initials: J
authors.lastname: Esteban-Hernández
authors.forename: Yolanda
authors.initials: Y
authors.lastname: Valcárcel Rivera
authors.forename: Valentín
authors.initials: V
authors.lastname: Hernández-Barrera
authors.forename: Angel
authors.initials: A
authors.lastname: Gil de Miguel
mesh_terms: D001838:Bolivia; D019652:Extraction and Processing Industry; D005648:Fuel Oils; D006801:Humans; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014877:Water Pollution, Chemical / Q000032:analysis*
chemical_list: D005648:Fuel Oils; D014874:Water Pollutants, Chemical