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Environmental Earth Sciences

, 77:644 | Cite as

A survey of groundwater quality in Tulum region, Yucatan Peninsula, Mexico

  • Renaud Saint-Loup
  • Théo Felix
  • Axaycatl Maqueda
  • Arnulf Schiller
  • Philippe Renard
Original Article
  • 123 Downloads

Abstract

The city of Tulum, in the state of Quintana Roo (Mexico) depends almost exclusively on groundwater for water supply. The groundwater is exploited from a coastal aquifer which contains a karst network that is considered as one of the largest ones on earth. Given the nature of karst aquifers, the whole area is very sensitive to contaminants and bacteria transport, because flow paths, residence time and degradation rates differ significantly from what can be observed in the porous aquifer. The present study focuses on isotopes (18O and 2H), dissolved ions’ concentration and Escherichia coli (E. coli). The result of our survey points out the anthropic impact on groundwater quality. Furthermore, the chloride concentrations illustrate the influence of seawater mixing and geological heterogeneity over the study area. Due to an exponential growth of the tourism industry, the needs in terms of water supply and water treatment increase significantly. Tulum is a coastal city, facing a coral reef and is bordered by the Sian Ka’an biosphere reserve, therefore, an environmental issue is added to the sanitary issue, both being the basis of the local economic development. Our results show that E. coli remains a major issue, as several samples tested were contaminated, in particular those in the city center. Ions’ survey shows an anthropic impact through nitrate, phosphate and fluoride concentrations, but the obtained values are not alarming. Considering the saline intrusion, chloride concentrations indicate that the area below the Tulum city center seems to be less permeable (and maybe less karstified) than the surrounding areas, as groundwater is less subject to seawater mixing than other sampling sites at similar distance to the coast.

Keywords

Karst Mexico Groundwater quality Contamination Seawater intrusion 

Notes

Acknowledgements

The authors of this paper want to acknowledge the Swiss National Science Foundation for its financial support (contract 200021L_141298), the NGO Amigos De Sian Ka’an for its support in the field, Office Cantonal des Bourses d’Etude, Vincent Gruber for his technical advices when preparing the field campaign and the ion analysis, and Gregory Käser for his assistance when preparing the field work. Renaud Saint Loup acknowledges in addition the Fond des Donations of the University of Neuchâtel who funded his travel and field expenses in Tulum.

Supplementary material

12665_2018_7747_MOESM1_ESM.docx (971 kb)
Supplementary material 1 (DOCX 971 KB)

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Centre for Hydrogeology and GeothermicsUniversité de NeuchâtelNeuchâtelSwitzerland
  2. 2.Geological Survey of AustriaViennaAustria

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