<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0187-5779</journal-id>
<journal-title><![CDATA[Terra Latinoamericana]]></journal-title>
<abbrev-journal-title><![CDATA[Terra Latinoam]]></abbrev-journal-title>
<issn>0187-5779</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de la Ciencia del Suelo A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0187-57792025000100112</article-id>
<article-id pub-id-type="doi">10.28940/terra.v43i.2106</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Calidad del Agua Potable en las Zonas Rurales Periféricas del Cantón Quevedo, Ecuador]]></article-title>
<article-title xml:lang="en"><![CDATA[Quality of Drinking Water in the Rural Peripheral Areas of Quevedo Canton, Ecuador]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cadme-Arévalo]]></surname>
<given-names><![CDATA[Maria Lorena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cedeño-Moreira]]></surname>
<given-names><![CDATA[Angel Virgilio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arreaga-Cadme]]></surname>
<given-names><![CDATA[Thais Sarah]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Geijo-López]]></surname>
<given-names><![CDATA[Alda]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Cadme]]></surname>
<given-names><![CDATA[Raisha Lorena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rojas-Uribe]]></surname>
<given-names><![CDATA[Loguard Smith]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Técnica Estatal de Quevedo Laboratorio de Biología y Microbiología ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Técnica Estatal de Quevedo Facultad de Ciencias Agrarias y Forestales ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Técnica Estatal de Quevedo Facultad de Ciencias Pecuarias y Biológicas ]]></institution>
<addr-line><![CDATA[Quevedo Los Ríos]]></addr-line>
<country>Ecuador</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2025</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2025</year>
</pub-date>
<volume>43</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-57792025000100112&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-57792025000100112&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-57792025000100112&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: La calidad del agua potable es un aspecto crucial para la salud y el bienestar de cualquier comunidad, especialmente en las zonas rurales periféricas del cantón Quevedo, Ecuador, donde la infraestructura de abastecimiento de agua potable es deficiente y la exposición a contaminantes es alta. Este estudio tiene como objetivo realizar un análisis integral de la calidad del agua potable. Para ello, se seleccionaron cinco localidades representativas del cantón Quevedo para la evaluación de la carga microbiana y el análisis de coliformes totales, textura del suelo, pH del suelo, y contenido de nitratos, nitritos, cobre y cromo en el agua. Los resultados mostraron variaciones significativas en la calidad del agua y del suelo entre las localidades. La carga microbiana y el conteo de coliformes totales fueron más altos en SCR 3, indicando una posible fuente de contaminación local. La textura del suelo varió, con predominancia arenosa en SCR 2 y SCR 3, lo cual afecta la retención de agua y la disponibilidad de nutrientes. Los valores de pH del suelo oscilaron entre 6.0 y 7.0, con SCR 3 presentando el pH más bajo. La concentración de nitratos fue más alta en SCR 2 (20 mg L-1), mientras que los nitritos fueron más elevados en ESP 2 (0.12 mg L-1). Los niveles de cobre variaron, siendo más altos en AGR (18 mg L-1), y los niveles de cromo hexavalente fueron más altos en SCR 2 (0.075 mg L-1). Estas variaciones en la calidad del agua y del suelo tienen implicaciones significativas para la salud pública y la productividad agrícola. Se identificaron fuentes de contaminación y se propusieron medidas de mitigación para mejorar la calidad del agua, promover la salud pública y apoyar el desarrollo agrícola sostenible en las comunidades rurales de Quevedo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Summary: The quality of drinking water is a crucial aspect for the health and well-being of any community, especially in the rural peripheral areas of Quevedo canton, Ecuador, where the drinking water supply infrastructure is deficient and exposure to contaminants is high. In our study we aim to conduct a comprehensive analysis of drinking water quality. Five representative localities in Quevedo canton were selected for the evaluation of microbial load and analysis of total coliforms, soil texture, soil pH, and the content of nitrates, nitrites, copper, and chromium in the water. Our results showed significant variations in water and soil quality among the localities. The microbial load and total coliform counts were highest in SCR 3, indicating a possible local contamination source. The soil texture varied, with a predominance of sandy texture in SCR 2 and SCR 3, which affects water retention and nutrient availability. Soil pH values ranged from 6.0 to 7.0, with SCR 3 presenting the lowest pH. Nitrate concentration was highest in SCR 2 (20 mg L-1), while nitrites were highest in ESP 2 (0.12 mg L-1). Copper levels varied, being highest in AGR (18 mg L-1), lastly, hexavalent chromium levels were highest in SCR 2 (0.075 mg L-1). These variations in water and soil quality have significant implications for public health and agricultural productivity. Sources of contamination were identified in our study, hence, we propose mitigation measures to improve water quality, promote public health, and support sustainable agricultural development in the rural communities of Quevedo.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[contaminación]]></kwd>
<kwd lng="es"><![CDATA[cromo]]></kwd>
<kwd lng="es"><![CDATA[localidades]]></kwd>
<kwd lng="es"><![CDATA[nitratos]]></kwd>
<kwd lng="es"><![CDATA[salud pública]]></kwd>
<kwd lng="en"><![CDATA[contamination]]></kwd>
<kwd lng="en"><![CDATA[chromium]]></kwd>
<kwd lng="en"><![CDATA[localities]]></kwd>
<kwd lng="en"><![CDATA[nitrates]]></kwd>
<kwd lng="en"><![CDATA[public health]]></kwd>
</kwd-group>
</article-meta>
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