Arsenic-rich groundwater in an urban area experiencing drought and increasing population density, Perth, Australia

Appleyard, S.; Angeloni, J.; Watkins, Ronald T.

doi:10.1016/j.apgeochem.2005.09.008

Cited by 84 publications

(59 citation statements)

References 23 publications

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“…Pyrite is the main source of As in coals with high As content, whereas in lower As coals, the As tends to be associated with the organic material (Yudovich and Ketris 2005). In Australia due to drought and increased water withdrawals caused oxidation of pyrite in sedimentary aquifers, resulting in As contamination of well water (Appleyard et al 2006). Groundwater from a sandstone aquifer contained As at concentrations that crossed 10-50 μg/L; the As content of the sandstone ranged from 5 to 15 mg/kg.…”

Section: Sedimentary Bedrockmentioning

confidence: 98%

Arsenic and Fluoride Pollution in Water and Soils

Farooqi

2015

Arsenic and Fluoride Contamination

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Section: Sedimentary Bedrockmentioning

confidence: 98%

Arsenic and Fluoride Pollution in Water and Soils

Farooqi

2015

Arsenic and Fluoride Contamination

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“…Release from these arsenic-bearing sulphide minerals by oxidation is a likely process for generating dissolved As (e.g. Schreiber et al, 2003;Appleyard et al, 2006).…”

Section: Groundwater From Springsmentioning

confidence: 99%

Geological factors controlling occurrence and distribution of arsenic in groundwaters from the southern margin of the Duero Basin, Spain

Giménez-Forcada

Smedley

2014

Environ Geochem Health

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Groundwater from springs and boreholes on the southern edge of the Cenozoic Duero Basin (DB) of Spain has concentrations of arsenic (As) which are commonly above the EC drinking-water limit of 10 µg/L, and reach observed values up to 241 µg/L. Groundwater compositions within the sedimentary aquifer vary from Ca-HCO 3 type, variably affected by evaporation and agricultural pollution at shallow levels, to Na-HCO 3 compositions in deeper boreholes of the basin. Groundwater conditions are mainly oxidising but reducing groundwaters exist in sub-basins within the aquifer, localised flow paths likely being influenced by basement structure. Arsenic concentrations are spatially variable, reaching up to 38 µg/L in springs of the Spanish Central System (SCS) basement aquifer and up to 62 µg/L in springs from the DB. Highest As concentrations are associated with the Na-HCO 3 compositions in deep boreholes (200-450 m depth) within the DB. These have high pH values (up to 9.6) can give rise to associated elevated concentrations of V and U (up to 64 µg/L and 30 µg/L respectively). In the deep borehole waters of the DB, oxidising flows derived from the mineralised igneous-metamorphic basement and discharging via major faults, are considered the origin of the higher concentrations. Compositions are consistent with desorption of As and other anionic species from metal oxyhydroxides in an oxic environment. Under locally reducing conditions prevalent in some low-flow parts of the DB, an absence of detectable dissolved As is coincident with low or undetectable SO 4 concentrations, and consistent with loss via formation of authigenic sulphide minerals. Mitigation measures are needed urgently in this semi-arid region where provision of alternative sources of safe drinking water is logistically difficult and expensive.

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“…Only contamination by pathogenic microorganisms has a bigger impact worldwide. Figure 1 Arsenic-affected countries (red) of the world (Smedley and Kinniburgh, 2002;Appleyard et al, 2006;Petrusevski et al, 2007;Smedley et al, 2007;Gunduz et al, 2009) Arsenic contamination of groundwater has been found to occur due to geothermallyinfluenced groundwater, mineral dissolution (e.g., pyrite oxidation), desorption in the oxidising environment, and reductive desorption and dissolution (Smedley and Kinniburgh, 2002). Table 1 gives an overview of the arsenic concentrations Figure 1.…”

Section: Introductionmentioning

confidence: 99%

“…Table 1 gives an overview of the arsenic concentrations Figure 1. Arsenic-affected countries (red) of the world (Smedley and Kinniburgh, 2002;Appleyard et al, 2006;Petrusevski et al, 2007;Smedley et al, 2007;Gunduz et al, 2009). arsenic in wallpaper. The manufacturers denied all claims.…”

Section: Introductionmentioning

confidence: 99%

Arsenic in drinking water: a worldwide water quality concern for water supply companies

Halem

Bakker

Amy

et al. 2009

Drink. Water Eng. Sci.

137

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Abstract. For more than a decade it has been known that shallow tube wells in Bangladesh are frequently contaminated with arsenic concentrations at a level that is harmful to human health. By now it is clear that a disaster of an unheard magnitude is going on: the World Health Organization has estimated that long-term exposure to arsenic in groundwater, at concentrations over 500 µg L −1 , causes death in 1 in 10 adults. Other studies show that problems with arsenic in groundwater/drinking water occur in many more countries worldwide, such as in the USA and China. In Europe the focus on arsenic problems is currently confined to countries with high arsenic levels in their groundwater, such as Serbia, Hungary and Italy. In most other European countries, the naturally occurring arsenic concentrations are mostly lower than the European drinking water standard of 10 µg L −1 . However, from the literature review presented in this paper, it is concluded that at this level health risks cannot be excluded. As consumers in European countries expect the drinking water to be of impeccable quality, it is recommended that water supply companies optimize arsenic removal to a level of <1 µg L −1 , which is technically feasible.

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Arsenic-rich groundwater in an urban area experiencing drought and increasing population density, Perth, Australia

Cited by 84 publications

References 23 publications

Arsenic and Fluoride Pollution in Water and Soils

Arsenic and Fluoride Pollution in Water and Soils

Geological factors controlling occurrence and distribution of arsenic in groundwaters from the southern margin of the Duero Basin, Spain

Arsenic in drinking water: a worldwide water quality concern for water supply companies

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