These drinking water test strips are so cool they'll make you want to drink more water!
These drinking water test strips are designed to measure the amount of dissolved oxygen in your water. They're easy to use and will tell you how much water you need to drink each day.
The first one is a color-changing strip that changes from blue to green when it detects the presence of chlorine or other chemicals in your tap water. This is a great way to ensure that you're getting clean, safe water. It's also a good idea to check your water before using it for cooking or making ice cubes. If you notice any strange tastes or smells, it might indicate something wrong with your water supply.
The second one is a UV light that turns red when it detects the presence or absence of bacteria in your water. The first thing you should do after buying these drinking water test strips is to put them into some water. Then, wait a few minutes and see what happens. If the strip changes color, then there's probably something wrong with your water.
What is Water Testing?
Water testing is carried out to meet the regulatory requirements and adhere to the safety procedures that are needed for pollutant-free water. This is a broad concept that involves several procedures to analyze and evaluate the quality of water.
Everyone who is affected by the water industry must test water sources. This could be the governmental organizations trying to regulate the quality of water to protect us from the health risks involved with using chlorinated water or it could be homeowners trying to ensure that the water is suitable for consumption.
Water, whether it is meant for business purposes, agriculture, domestic purposes, or is used by public municipalities and private homeowners must be tested regularly in order to keep the source of water safe and free from environmental risks and potential health disorders.
It is important to monitor two more chemical parameters: pH and chlorine residual.
pH: pH test strips and color disk tests are widely available. More expensive, higher-tech options include electrode-based pH meters. pH is a measure of hydrogen ion activity, which means that it tells us how acidic or basic the water is. pH is not a pollutant, but it is a chemical master variable. It affects the behavior of other chemical constituents, including the effectiveness of residual chlorine against microbial contamination. Sudden changes in pH can also reveal treatment plant failures or pollution events in natural water bodies (for example, illegal industrial discharge).
Chlorine: There are many easy ways to test residual chlorine, including test strips, color disks, and even kits designed for testing swimming pools. Portable digital meters also exist that can provide reliable, quantitative measurements.
Why do I need to take a water test?
Testing your water is the first step in protecting your health. If you receive your water from a well, it is an essential part of maintaining a safe water source. Changes in the appearance, taste, and smell of your water are easily recognizable concerns
How do I know when to take a water test?
Groundwater is always moving. As a result, there is an endless opportunity for your water source to become contaminated.
UV Disinfection Drinking Water Treatment
As a water treatment technique, UV is known to be an effective disinfectant due to its strong germicidal (inactivating) ability. UV disinfects water containing bacteria and viruses and can be effective against protozoans like Giardia lamblia cysts or Cryptosporidium oocysts.
Ultraviolet disinfection of drinking water
Water obtained from natural sources such as dams, streams, bores, and rainwater tanks may contain microorganisms that can pose a risk to your health. The Department of Health recommends that all naturally sourced water should be professionally tested and treated before it is used for drinking, bathing, filling swimming and paddling pools, food preparation, or cooking. A number of water treatment systems can be used to remove microbiological contaminants that may cause illness. Ultra Violet (UV) light disinfection is one water treatment system that can be used to remove most forms of microbiological contamination from water.
What is UV light?
UV light is part of natural sunlight. It cannot be seen as UV light is between visible light and x-rays.
How does UV light kill microorganisms?
When UV light enters a microorganism, its energy will damage the microorganism’s cellular function so that it will not be able to grow.
Is UV light effective against all microorganisms?
Yes. UV light is normally effective against all viruses, bacteria and protozoa. However, some microorganisms such as Cryptosporidium and Giardia have protective or thick cell walls that some low-power UV light systems are not able to penetrate. (It is important to make sure the UV light disinfection systems are specifically designed to kill these microorganisms if necessary.)
Does UV light work in all water conditions?
No. UV light will only travel in a straight line so any shadow or obstruction will reduce its efficiency. Water that is not filtered can contain iron, manganese and other particles that can either absorb or scatter UV light reducing the effectiveness of the disinfection system. Microorganisms that are able to pass through protected by shadows created by dirt, debris or other microorganisms may be able to survive treatment.
Conclusion
Water is vital to our health.
Water is required for the survival of all species, including humans.
Because water comprises approximately 70% of our body weight, it is critical to our health.

Resources
https://www.why-is-it-important-to-test-water
https://how-test-water-quality
https://ultraviolet.com/uv-c-for-failed-water-test
https://www.water-research.netwater-disinfection/uv-disinfection
https://ww2.health.wa.gov.Ultraviolet-disinfection-of-drinking-water