Suche...
Generic filters
Filter by Themen
Abwasserbehandlung
Analytik & Hygiene
Digitalisierung
Energie
Engineering
Events
Kosten & Tarife
Nachhaltigkeit & Umweltschutz
Netze
Politik
Recht & Regelwerk
Wasseraufbereitung
Wassergewinnung
Wasserstress
Water Solutions
Filter by Kategorien
Branche
Forschung & Entwicklung
Leute
People
Products & Solutions
Produkte & Verfahren
Publications
Publikationen
Sonstiges
Trade & Industry
Filter by Kategorien
Firmenverzeichnis
Geschützte Downloads
Mediadaten
Öffentliche Downloads
Filter by Veranstaltungsschlagworte
abwasser
ACHEMA
Automatisierung
FDBR
kanalnetze
MSR
Talsperren
trinkwasser
wasseraufbereitung
wasserbau
Wassernetze
Wasserversorgung

U.S. groundwater in peril: potable supply less than thought

Kategorie:
Autor: Jonas Völker

U.S. groundwater in peril: potable supply less than thought

The research by scientists from the University of Saskatchewan, the University of Arizona and the University of California, Santa Barbara was published November 14 in Environmental Research Letters.
"We found that potable groundwater supplies in the U.S. do not go as deep as previously reported, meaning there is less groundwater for human and agricultural uses," said Jennifer McIntosh, a University of Arizona Distinguished Scholar and professor of hydrology and atmospheric sciences.
Drilling deeper wells may not be a good long-term solution to compensate for increasing demands on groundwater.
"We show that there is potential for contamination of deep fresh and brackish water in areas where the oil and gas industry injects wastewaters into – or in close depth proximity to – these aquifers," McIntosh said. "These potable water supplies are already being used up from the ‘bottom up’ by oil and gas activities.

The importance of groundwater

"Groundwater is the primary source of domestic water supply for about half of the people living in the U.S. About 40% of all of the water used in the U.S. for irrigated agriculture comes from groundwater," McIntosh said. "In Tucson, Arizona, about half of our drinking water comes from groundwater."
Many rural areas in Arizona and other parts of the U.S. rely exclusively on groundwater for both agricultural and domestic use, she said.

Methodology and new findings

To find out how deep potable groundwater extends, the scientists analyzed water chemistry data from the U.S. Geological Survey for 28 key sedimentary basins in the U.S. and looked at the correlation between water well depths and the depth to the transition between fresh and brackish water.
Until now, the focus has been on monitoring dropping water tables, said lead author Grant Ferguson, principal investigator of the University of Saskatchewan-led Global Water Futures project.
In parts of the western U.S. known to geologists as the Basin and Range Province, fresh groundwater extends down an average of 3,400 feet, McIntosh said. The province includes Nevada, southern Arizona and New Mexico, and extends into parts of California, Utah, Oregon and Idaho.
The new research found the average depth of transition from fresh to brackish groundwater in the U.S. overall is about 1,800 feet, which contradicts previous studies suggesting that fresh groundwater extends down to 6,500 feet.
To read the full article and access the study, visit the UA website.

Das könnte Sie auch interessieren:

20 Jahre Wasserrahmenrichtlinie: Deutschland liegt weit hinter seinen Zielen zum Gewässerschutz
Analysis of microplastics of a broad size range
Atlas shows how global surface water resources have changed throughout the last decades

Passende Firmen zum Thema:

Thema: Netze

ERHARD GmbH & Co. KG

Thema: Netze

Armaturen und Formstücke der Marken ERHARD, FRISCHUT & SCHMIEDING

Publikationen

Fused connecting lines made of HDPE in Düsseldorf

Fused connecting lines made of HDPE in Düsseldorf

Autor: Alexander Schuir / Hanjo Kanne / Kai Büßecker
Themenbereich: 3R

Home to about 600,000 inhabitants, the state capital of North Rhine-Westphalia Düsseldorf, like any other city, is constantly endeavouring to provide its citizens, commuters, and guests with a fully functional infrastructure to meet the demands of ...

Zum Produkt

Quality Assurance and modern data management

Quality Assurance and modern data management

Autor: Jörg Sebastian
Themenbereich: 3R

...

Zum Produkt

Rehabilitation of large profiles lacking long-term stability

Rehabilitation of large profiles lacking long-term stability

Autor: Dietmar Beckmann / Heinz Doll / Vladimir Lacmanović
Themenbereich: 3R

Many large interceptor sewers, predominantly installed under public roads, have been in use for over 100 years. They are made of brickwork or compressed concrete and often show serious damage, so that it would seem that long-term stability can no ...

Zum Produkt

Mehr Publikationen...

Sie möchten die gwf Wasser + Abwasser testen

Bestellen Sie Ihr kostenloses Probeheft

Überzeugen Sie sich selbst: Gerne senden wir Ihnen die gwf Wasser + Abwasser kostenlos und unverbindlich zur Probe!

Finance Illustration 03