First of all, the water sampling procedure should be followed accordingly to avoid re-sampling. Indeed, if the sample is not collected correctly, following the procedure, contamination of the water samples can occur. When water samples need to be tested in a laboratory, the result may not be accurate. To conduct water sampling, individuals must first wash their hands thoroughly and then wear gloves when collecting samples. The reason for this is to avoid contamination of water samples and to protect individuals from microbial organisms in water that could be harmful to humans. After that, all collected samples should be put into the clean vial with detailed labeling. It is important to label the bottle before collecting the water sample to prevent the sample from being mixed. Additionally, it is advised not to use water-soluble ink when labeling, as blurred ink may be difficult to read and it will become difficult to identify the sample. To transport a water sample to the microbiology laboratory for analysis, first of all, the nearby microbiology laboratory should be contacted beforehand or as early as possible to inform them about the water sample to be analyzed so that he can prepare the appropriate material for analysis. Proper packaging is very important in order to maintain the condition of the water sample and avoid contamination of the water sample. As soon as the water sample is collected according to the proper procedure and stored in a clean, sterile bottle, the sample should be packaged in a shipping cooler or foam box that can only be used for that particular sample . Samples must be preserved. In ice to ensure the sample temperature is low. Using regular ice is sufficient to keep the sample cool. However, dry ice should never be used as it may freeze the sample and it is unsafe to ship. The cooler should be lined with plastic bags to prevent leaks. Some suggestions for suitable bags that can be used are large, durable plastic bags or trash bags. The recommended temperature for storing the water sample is approximately 0 to 10°C. The important thing about cold is that, to prevent bacteria from multiplying.