One way to tell if a UV filter is working is to look for a change in the color of the water. UV filters use ultraviolet light to kill bacteria and other microorganisms in water, and this process can cause the water to appear slightly cloudy or blue in color. If you notice a change in the color of the water after using a UV filter, it is a good indication that the filter is working.
Another way to tell if a UV filter is working is to check the flow rate of the water. UV filters can reduce the flow rate of water slightly, so if you notice a decrease in the flow rate of the water after using a UV filter, it is a good indication that the filter is working.
Lastly, you can check the manufacturer’s specifications to see if the UV filter has a UV lamp that is operating correctly. Many UV filters have a UV lamp that needs to be replaced periodically, and if the lamp is not operating correctly, the filter will not be effective at killing bacteria and other microorganisms in the water.
We use a UV filter to eliminate all the bacteria and viruses present in the water to make it safe and clean for drinking. However, it’s very hard to know that your water is safe for drinking after filtration from just a look or an assumption.
Yes, contaminated water may appear cloudy, but that does not give 100% certainty that if the water is clear it is free from bacteria, protozoa, and viruses. Therefore we tend to ask this question to have that satisfaction that the product is working effectively and worth the value for our money.
For you to know if your UV filter is working can be done by checking the lamp if it’s glowing, and if it isn’t, there may be a problem with the lamp, ballast, or just electric problems that can be fixed.
You may also check the bulb if it’s functioning well to radiate the UV rays that destroy the bacteria. It can be done by using a white piece of cloth or paper where you hold it against the light, and if it turns a violet shade, that means its working, and if it remains white, that means that the filter is not working and the water is still contaminated.