Coliform Bacterial in Drinking Water (VOH 11 Medium)

According to World Health Organization’s guidelines, there should not be any coliform bacteria in drinking water as it is an indicator of faecal contamination that could cause bacterial infection, thus contributing to diseases related to digestive systems for example diarrhea.

The testing of coliform bacterial in water can be done by preliminary field test kit, VOH11 Medium.The test can be performed by a nonspecialist after being trained to use VOH11 Medium to detect faecal contamination of drinking water. Then, appropriate actions should be taken for improvement prior to consumption. Using VOH11 Medium to detect Coliform bacteria in drinking water is very simple, easy and convenient. If the water is contaminated, the culture medium will change from its original red colour to brown, orange or yellow depending on the degree of contamination. Also the presence of turbidity and emergence of gas when shaken the reaction bottle gently confirms positive coliform bacteria contamination.

VOH 11 Medium is used as a reliable tool in detecting coliform bacteria in drinking water if one follows the prescribed instruction and steps as shown in the manual. The result of using VOH 11 Medium according to the finding of research study shows over 84.5% accurate compared to the standard test procedure or Multiple-Tube Fermentation technique