For many decades some municipal water systems have used a form of light, UV-C (Ultraviolet light in the C spectrum) as a final method of in the water disinfection cycle. What’s new and important is that it’s now possible to effectively disinfect water at home through an effective combination of physical filtration and UV-C LED exposure.
Ultraviolet light shining at between 260 and 275 nm on the spectrum destroys a microorganism’s ability to function at all. If the particulate matter in water down to 2 Microns is removed, viral and other pathogenic germs cannot hide from this lethal exposure to UV-C LEDs.
Systems for disinfecting one’s water in this manner are now commercially available for home use. For a kitchen sink two additions are required. A physical filtration system must be installed to eliminate particles that micro-organisms can hide behind – i.e. additional plumbing for filtration system. An electric connection to run the UV-C LED unit (usually a pipe filled with UV-C LEDs added after the filtration unit). This UV-C LED unit is only active when water is running (electrical use is minimal and UV-C LEDS have a lifespan measured in thousands of hours).
Properly installed, such a chemical free system, is able to provide uncontaminated water regardless of the water source as long as the physical filtration system is operational.