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December 9, 2025SustainabilityOpen Access

Temporal Variability of Arsenic in the Caplina Aquifer, La Yarada Los Palos, Peru: Implications for Risk-Based Drinking Water Management

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Authors

LSLuis Johnson Paúl Mori SosaDCDante Ulises Morales CabreraWLWalter Florez Ponce de León

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Overview

Analysis reveals significant arsenic fluctuations in groundwater, indicating the need for adaptive risk-based monitoring strategies.

Key Points

  • This research assesses the temporal variability of arsenic levels in the Caplina aquifer and its compliance implications.
  • Analyzed a one-year fortnightly dataset from three supply wells
  • Measured parameters include electrical conductivity, total dissolved solids, pH, and temperature
  • Determined total arsenic using inductively coupled plasma–mass spectrometry
  • Applied descriptive statistics and exceedance proportions analysis
  • Evaluated correlations and time-series diagnostics
  • Exceedances were observed in 100% of samples at Point 1 and 91.7% at Points 2 and 3
  • Low relative variability (coefficient of variation ≈ 7-10%) despite significant risks of compliance failure
  • Identified a moderate correlation between arsenic and total dissolved solids at Point 1
  • Proposes risk-based monitoring with key indicators for early warnings

Cite This Study

Sosa et al. (2025) studied this question.

synapsesocial.com/papers/69401d682d562116f28f9168https://doi.org/10.3390/su172411025
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  1. 1Sectoral Patterns of Arsenic, Boron, and Salinity Indicators in Groundwater from the La Yarada Los Palos Coastal Aquifer, Peru2026
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  5. 5The Dynamics of the Concentration and Speciation of Arsenic in Private Drinking Water Wells in Eastern Wisconsin, USA2024 · 4 citations