Essentials Of Drinking Water Testing

By Judy Sullivan


Drinking water should always be safe for human consumption. A large percentage of the world population drink water that is not safe leading to widespread diseases and death. Minimising the related diseases is one of the most important public health goals in many countries. Drinking water testing is just one of the ways to achieve this goal.

Regular sampling should be done to ensure that purity is maintained and safety is guaranteed. As much as this is the responsibility of the public health department, you should not take any chances. Instead you should take the initiative to collect samples and ensure that indeed they are of good quality. Depending on the location of the source, various substances may be detected. These include radon, sulphate, iron, manganese, pesticides and so forth. The most common quality challenge is bacteria, which has to be tested at least once a year.

A number of changes and occurrences may call for testing of samples more than once a year. One should suspect extremely high levels of manganese, sulphate and iron in the event of changes in clarity, taste, color and smell. The tests are also crucial when unexplained illness occur within the immediate environment. Pregnancy is another critical indicator for home testing.

The occurrence of unwanted events such as sewage drainage destruction or blockage should raise the suspicion of contamination. One should also get concerned when there is a certain outbreak of diarrhea diseases. When water equipment gets worn out at a faster rate than usual, chances are high that this is linked to corrosion, hardness and pH changes. Inability of soaps to lather easily should also be considered.

Infants are vulnerable to nitrate and overexposure to the same can lead to nitrate poisoning. This results in a blood disorder termed blue baby syndrome which is characterised by very low levels of oxygen which cannot meet the requirements. It should be treated as a medical emergency in the event of exposure and symptom presentation.

The samples used for this process are taken in different ways. The first sample is what comes out of the tap first once it is turned on in the morning. Another sample should be taken after the stream runs for some time. Samples can be collected at different points in the piping system when contamination has occurred in more than one section. Suggested points include inlet and outlet of a filtering device or before and after entry in storage tank. An allowance of 12 hours should be given when collecting the sample from a system suspected of corrosion.

After samples have been tested and specific contaminants identified, filters can be installed to get rid of impurities. Reverse osmosis systems and distillation systems filter out fluoride, an element crucial for strengthening enamel and preventing tooth decay. AS such, caution should be taken when using such filters.

Even after the safety threshold has been reached, it is important to ensure that there is proper storage. This will help reduce the chances of contamination and diseases later on. While in storage, drinking water testing should be done regularly to make sure that the status has not changed.




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