Essentials Of Drinking Water Testing

By Judy Sullivan


Drinking water is defined as water that does not pose health concerns to users. A huge percentage of people drink contaminated water resulting in many illnesses some of which are rapidly fatal. These diseases can be rapidly spread especially among communities that live close together. Eradicating related diseases is one of the major public health goals in the developing world. Drinking water testing is one of the many ways towards attaining this aim.

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.

There are situations that may require testing to be done more frequently within a year. If there are changes in colour, smell, taste and clarity one should suspect high levels of contaminants such as iron, sulphate and manganese. At the same time, whenever unexplained illnesses are noted among people who drink from the same source. Home testing should be done if a member of the household is pregnant.

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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