Wastewaters are derived materials from household waste or industrial processes. This water was usually poured directly into rivers and lakes, but the currently high volume of sewage does not allow self-purification, and the high levels of organic pollution and nitrogen would lead to a non-reversible degradation for the majority of rivers and lakes.

Various species of microorganisms are found in wastewater. These microorganisms can contribute to pollution causing human disease, creating an aesthetically unpleasant biomass or generating toxic metabolites.

Among the most common microorganisms, Escherichia coli, enterobacteria, Vibrio and intestinal enterococci can be found. Pathogen access to wastewaters creates risks to public health, since if these not are properly treated, water can reach humans through drinking water, seafood, recreational water or crops. In order to avoid possible diseases, it is necessary to examine the water to determine its microbiological quality.

Currently, indicator microorganisms are sought for. These indicate whether the water is contaminated with fecal matter of warm-blooded animals or humans.

Culture media for Water analysis


The presence of indicator microorganisms in water confirms the presence of pathogens.

Water analyses are carried to

  • Evaluate the quality of domestic supply waters at urban and rural levels

  • Evaluate the quality of coastal waters and fresh waters for recreation purposes

  • Detect the influence of septic tanks, located in the nearby rivers and coastline

  • Analyze the contributions of rain to the receiver body’s bacterial load

  • Quantify the influence of important, specific downloads as industrial and sewage liquids treatment plants

There are diverse culture media for the identifiaction of imporant indicators