Water ratios and microorganisms contamination influencing their viability for human consumption

Abstract

Water is essential for life and indispensable element for maintenance thereof. The objective of this study was to evaluate pH, electrical conductivity and contamination by microorganisms. Samples were collected and dilution was performed in 0.85% saline to a concentration of -5 and plated in triplicate in pour plate method, on 6 different culture medium: BDA, CLED, Agar Bromo thymol. Nutrient Agar, Sabouraud Agar, GELP and GL, hatched for seven days in a bacteriological incubator for 28 ° C. For  analysis of pH was used Bench pH meter - Q400AS QUIMIS and for electrical conductivity, Conductivity portable Quimis model Q795P 9UDC (drums) - OW. At the end of all culture medium, except Sabouraud, made possible the isolation of bacteria and fungi, all samples developed microorganisms, the sample from Spring Anda Só and mineral water showed same pattern of contamination, and likeness in pH and electric conductivity, thereby both suitable for consumption.