Overpumping leads to California groundwater arsenic threat
Abstract
Water resources are being challenged to meet domestic, agricultural, and industrial needs. To complement finite surface water supplies that are being stressed by changes in precipitation and increased demand, groundwater is increasingly being used. Sustaining groundwater use requires considering both water quantity and quality. A unique challenge for groundwater use, as compared with surface water, is the presence of naturally occurring contaminants within aquifer sediments, which can enter the water supply. Here we find that recent groundwater pumping, observed through land subsidence, results in an increase in aquifer arsenic concentrations in the San Joaquin Valley of California. By comparison, historic groundwater pumping shows no link to current groundwater arsenic concentrations. Our results support the premise that arsenic can reside within pore water of clay strata within aquifers and is released due to overpumping. We provide a quantitative model for using subsidence as an indicator of arsenic concentrations correlated with groundwater pumping.
- Authors:
-
[1];
[2]
- Stanford Univ., CA (United States). Dept. of Geophysics
- Stanford Univ., CA (United States). Dept. of Earth System Science
- Publication Date:
- Research Org.:
- Stanford Univ., CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Biological and Environmental Research (BER)
- OSTI Identifier:
- 1511430
- Grant/Contract Number:
- SC0016544
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nature Communications
- Additional Journal Information:
- Journal Volume: 9; Journal Issue: 1; Journal ID: ISSN 2041-1723
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES
Citation Formats
Smith, Ryan, Knight, Rosemary, and Fendorf, Scott. Overpumping leads to California groundwater arsenic threat. United States: N. p., 2018.
Web. doi:10.1038/s41467-018-04475-3.
Smith, Ryan, Knight, Rosemary, & Fendorf, Scott. Overpumping leads to California groundwater arsenic threat. United States. https://doi.org/10.1038/s41467-018-04475-3
Smith, Ryan, Knight, Rosemary, and Fendorf, Scott. Tue .
"Overpumping leads to California groundwater arsenic threat". United States. https://doi.org/10.1038/s41467-018-04475-3. https://www.osti.gov/servlets/purl/1511430.
@article{osti_1511430,
title = {Overpumping leads to California groundwater arsenic threat},
author = {Smith, Ryan and Knight, Rosemary and Fendorf, Scott},
abstractNote = {Water resources are being challenged to meet domestic, agricultural, and industrial needs. To complement finite surface water supplies that are being stressed by changes in precipitation and increased demand, groundwater is increasingly being used. Sustaining groundwater use requires considering both water quantity and quality. A unique challenge for groundwater use, as compared with surface water, is the presence of naturally occurring contaminants within aquifer sediments, which can enter the water supply. Here we find that recent groundwater pumping, observed through land subsidence, results in an increase in aquifer arsenic concentrations in the San Joaquin Valley of California. By comparison, historic groundwater pumping shows no link to current groundwater arsenic concentrations. Our results support the premise that arsenic can reside within pore water of clay strata within aquifers and is released due to overpumping. We provide a quantitative model for using subsidence as an indicator of arsenic concentrations correlated with groundwater pumping.},
doi = {10.1038/s41467-018-04475-3},
journal = {Nature Communications},
number = 1,
volume = 9,
place = {United States},
year = {Tue Jun 05 00:00:00 EDT 2018},
month = {Tue Jun 05 00:00:00 EDT 2018}
}
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Works referencing / citing this record:
Monitoring Groundwater Change in California’s Central Valley Using Sentinel-1 and GRACE Observations
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