Examinando por Materia "Water Supply"

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Acceso abierto
Determinación de calidad del agua para el consumo humano aplicando la metodología de revisión sistemática y metaanálisis en tesis universitarias
(Universidad Privada Norbert Wiener, 2021-10-21) Estrada Lapas, Guillermina; Vidal Olortegui, Claudia Lisset; Castillo Soto, Pedro Félix
The objective of this study was to establish the quality of water for human consumption by analyzing the results of studies on physicochemical and microbiological parameters, using a systematic review complemented by a meta-analysis. The use of these techniques established that the scientific production at the university academic level is of low quality. A synthesis of results based on the standardized mean difference between the values found for each analyzed parameter and its corresponding standard allowed the study to establish that not all of the required tests for mandatory control parameters were performed. A standardized mean of 0.04 (95% CI: -0.15 to 0.22) was found for pH, and 0.11 (95% CI: -0.9 to 0.32) was found for free chlorine content. Both values showed a tendency toward the standard but were not statistically significant. This indicates that the analyzed studies do not provide robust information to draw conclusions about the quality of the water consumed in Lima.
Acceso abierto
Determinación de la calidad microbiológica e inocuidad del agua potable para consumo de los dispensadores de las boticas y farmacias del distrito de Breña en el departamento de Lima, mayo-junio de 2017
(Universidad Privada Norbert Wiener, 2017) Bobadilla Poquioma, Carlos Yoel; Hurtado Cahuana, José Luis; Guevara Vicaña, Rita Aurora
Water intended for consumption, the preparation of food and beverages, or personal hygiene must not contain any human pathogens. This can be achieved by selecting high-quality water sources, effectively treating and decontaminating water polluted by human or animal feces or other substances, and protecting it from contamination during distribution to the user. Therefore, it is necessary to determine the presence of microorganisms that indicate water safety (total coliforms) and those that indicate water microbiological quality (Heterotrophs). This was carried out on samples from 67 pharmaceutical establishments in the Breña district during May–June 2017. The determination of coliform microorganisms was performed by the multiple tube method, and the determination of heterotrophic microorganisms was performed by the pour plate count method. The results were compared with the standards established in the Regulation on Drinking Water Quality: D.S. N° 031-2010-SA / Ministry of Health. General Directorate of Environmental Health – Lima: Ministry of Health; 2011. 4.5% of the samples did not comply with the established parameters (Heterotrophs), as the maximum permissible limit according to current national standards is 500 CFU/mL of sample.
Acceso abierto
Evaluación de los parámetros de control obligatorio de la calidad del agua para consumo humano en los reservorios del centro poblado rural Río Seco – Cieneguilla, marzo–octubre, 2019
(Universidad Privada Norbert Wiener, 2020-07-21) Chacmana Asturima, Edgar Angel; Blas Manyari, Cristopher Isaac; Collanque Pinto, Jesús Daniel
The study of water quality has been evaluated by many national and international studies, as it is essential and vital for water intended for human consumption to have the necessary characteristics to ensure its risk-free consumption. The WHO, through its guidelines for drinking water quality, emphasizes prevention and sustainable access to drinking water for economic development. Locally, the General Directorate of Environmental Health (DIGESA) aligns with this, especially with its regulatory framework DS-031-2010-SA. The objective of this study was to evaluate the mandatory control parameters for the quality of water for human consumption in the reservoirs of the Rio Seco – Cieneguilla rural town center, from March to October 2019. The methodology used was a descriptive, cross-sectional, and non-experimental study with quantitative microbiological and physical analysis based on current regulations. The population consisted of 46 properties, and quality was evaluated according to the following parameters: Determination of total coliforms and Escherichia coli, and determination of physical parameters (pH, residual chlorine, turbidity, and color). An evaluation through surveys showed that 67.4% of properties did not continuously clean their reservoir and 28.3% did not purify the water they consumed. This improved after training was provided, with a predisposition to improve sanitary measures, resulting in 70% purifying their water and 80% continuously cleaning their reservoirs. Results: 97.8% (45 samples) tested positive for total coliforms, and 34.8% (16 samples) tested positive for Escherichia coli. These results were compared with the permissible parameters according to current drinking water quality regulations. Conclusion: The water consumed by the population does not comply with the mandatory microbiological parameters of the DS N° 031-2010 SA, DIGESA regulation.