# Microbiological identification of pathogens in water from educational centers in Norte de Santander

## TL;DR

This study identifies harmful bacteria in drinking water from schools in Norte de Santander, showing poor water quality and potential health risks.

## Contribution

The study provides new data on microbial contamination in school water supplies in a specific region of Colombia.

## Key findings

- Most water samples contained mesophilic bacteria and coliforms, indicating poor water quality.
- Pseudomonas and Salmonella were frequently detected, suggesting contamination risks.
- Findings highlight the need for improved water purification and monitoring in schools.

## Abstract

Water is an essential resource for survival, and therefore, its quality and safety must be a priority, especially for susceptible population groups.

To determine the presence of mesophilic aerobes, coliforms, and Pseudomonas in drinking water in schools from three municipalities of Norte de Santander.

Maintenance personnel were inquired about water storage. Samples from different sources were collected and processed using the membrane filtration method to identify aerobic mesophilic bacteria, E. coli, coliforms, Pseudomonas spp., and Salmonella spp. following the technical standards established for each microorganism.

Mesophilic bacteria growth was identified in 77.50% of the samples, total coliforms in 84.00%, fecal coliforms in 72.00%, and Escherichia coli in 21%. Pseudomonas spp. was also identified in 73.00% of the samples and Salmonella spp. in 10.50%.

These findings reflect non-compliance with current regulations due to the presence of indicator organisms such as mesophiles and the indicator par excellence in water quality: coliforms, a fact that is ratified by the presence of Pseudomonas spp. and Salmonella spp.

The presence of these microorganisms is associated with failures in the water purification process, which allows us to expose the need for corrective actions to guarantee the microbiological quality of water and ensure health.