Influence of Land Use and Sanitation Issues on Water Quality of an Urban Aquifer

Filipe Peixoto (), Itabaraci Nazareno Cavalcante () and Diolande Ferreira Gomes ()
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Filipe Peixoto: Universidade do Estado do Rio Grande do Norte
Itabaraci Nazareno Cavalcante: Universidade Federal do Ceará
Diolande Ferreira Gomes: Universidade Federal do Ceará

Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), 2020, vol. 34, issue 2, No 12, 653-674

Abstract: Abstract In this study, we sought to determine whether there was a relationship between sanitary aspects and land use on nitrate contamination in an urban aquifer of Fortaleza city in the state of Ceará, Brazil. For this, we analyzed land use (constructed area, exposed soil, green area and lagoons) using orbital images with a special resolution of 5 m, as well as sanitary aspects (access to sewage service and use of septic tanks and rudimentary cesspits for domiciles). To study groundwater quality, we collected 30 samples to assess the physical-chemical parameters, including nitrate, nitrite and ammoniacal nitrogen. Sectors with little constructed area produce low concentrations of nitrogenic compounds. Most occupied areas had a significant influence on nitrite concentration, likely due to infiltration from runoff and the low natural recharge from atmospheric precipitation. Areas where >75% of the domiciles were linked to sewage service suffered little nitrate contamination in rainy periods, while areas where

Keywords: Land use; Sanitation aspects; Groundwater; Rudimentary cesspit; Septic tanks (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (1)

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DOI: 10.1007/s11269-019-02467-6

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