Nitrate exposure from drinking water in Denmark over the last 35 years

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Nitrate exposure from drinking water in Denmark over the last 35 years. / Schullehner, Jörg; Hansen, Birgitte.

In: Environmental Research Letters, Vol. 9, No. 9, 2014, p. 095001.

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Schullehner, Jörg ; Hansen, Birgitte. / Nitrate exposure from drinking water in Denmark over the last 35 years. In: Environmental Research Letters. 2014 ; Vol. 9, No. 9. pp. 095001.

Bibtex

@article{7c2abbbf06ba44a69e0a8f6e783ba33a,
title = "Nitrate exposure from drinking water in Denmark over the last 35 years",
abstract = "In Denmark, drinking water quality data covering the entire country for over 35 years are registered in a publicly-accessible database. These data were analysed to determine the fraction of population exposed to elevated nitrate concentrations. Data from 2,852 water supply areas from the 98 Danish municipalities were collected in one dataset. Public water supplies are extensively registered; private wells supplying only few households are neither monitored nor registered sufficiently. The study showed that 5.1{\%} of the Danish population was exposed to nitrate concentrations 25 mg L−1 in 2012. Private well users were far more prone to exposure to elevated nitrate concentrations than consumers connected to public supplies. While the fraction exposed to elevated nitrate concentrations amongst public supply users has been decreasing since the 1970s, it has been increasing amongst private well users, leading to the hypothesis that the decrease in nitrate concentrations in drinking water is mainly due to structural changes and not improvement of the groundwater quality. A combination of this new drinking water quality map with extensive Danish health registers would permit an epidemiological study on health effects of nitrate, as long as the lack of data on private well users is addressed.",
keywords = "kv{\ae}lstof, nitrat, monitering, drikkevandskvalitet, trends, eksponering, Nitrogen, nitrate, Monitoring, drinking water quality, trends, exposure",
author = "J{\"o}rg Schullehner and Birgitte Hansen",
year = "2014",
doi = "10.1088/1748-9326/9/9/095001",
language = "English",
volume = "9",
pages = "095001",
journal = "Environmental Research Letters",
issn = "1748-9326",
publisher = "IOP Publishing",
number = "9",

}

RIS

TY - JOUR

T1 - Nitrate exposure from drinking water in Denmark over the last 35 years

AU - Schullehner, Jörg

AU - Hansen, Birgitte

PY - 2014

Y1 - 2014

N2 - In Denmark, drinking water quality data covering the entire country for over 35 years are registered in a publicly-accessible database. These data were analysed to determine the fraction of population exposed to elevated nitrate concentrations. Data from 2,852 water supply areas from the 98 Danish municipalities were collected in one dataset. Public water supplies are extensively registered; private wells supplying only few households are neither monitored nor registered sufficiently. The study showed that 5.1% of the Danish population was exposed to nitrate concentrations 25 mg L−1 in 2012. Private well users were far more prone to exposure to elevated nitrate concentrations than consumers connected to public supplies. While the fraction exposed to elevated nitrate concentrations amongst public supply users has been decreasing since the 1970s, it has been increasing amongst private well users, leading to the hypothesis that the decrease in nitrate concentrations in drinking water is mainly due to structural changes and not improvement of the groundwater quality. A combination of this new drinking water quality map with extensive Danish health registers would permit an epidemiological study on health effects of nitrate, as long as the lack of data on private well users is addressed.

AB - In Denmark, drinking water quality data covering the entire country for over 35 years are registered in a publicly-accessible database. These data were analysed to determine the fraction of population exposed to elevated nitrate concentrations. Data from 2,852 water supply areas from the 98 Danish municipalities were collected in one dataset. Public water supplies are extensively registered; private wells supplying only few households are neither monitored nor registered sufficiently. The study showed that 5.1% of the Danish population was exposed to nitrate concentrations 25 mg L−1 in 2012. Private well users were far more prone to exposure to elevated nitrate concentrations than consumers connected to public supplies. While the fraction exposed to elevated nitrate concentrations amongst public supply users has been decreasing since the 1970s, it has been increasing amongst private well users, leading to the hypothesis that the decrease in nitrate concentrations in drinking water is mainly due to structural changes and not improvement of the groundwater quality. A combination of this new drinking water quality map with extensive Danish health registers would permit an epidemiological study on health effects of nitrate, as long as the lack of data on private well users is addressed.

KW - kvælstof

KW - nitrat

KW - monitering

KW - drikkevandskvalitet

KW - trends

KW - eksponering

KW - Nitrogen

KW - nitrate

KW - Monitoring

KW - drinking water quality

KW - trends

KW - exposure

U2 - 10.1088/1748-9326/9/9/095001

DO - 10.1088/1748-9326/9/9/095001

M3 - Journal article

VL - 9

SP - 095001

JO - Environmental Research Letters

JF - Environmental Research Letters

SN - 1748-9326

IS - 9

ER -