I smell a project....

Does anyone know what wavelength and intensity the UV water sterializer systems use? If they make an LED of that, run a sealed strip of them down the inside of the drum, and seal the points where the contracts enter with silicone. The LEDs run for, say 4 hours out of every 24. It would keep the water bug free for pretty much forever, depending on how well UV penetrates water. The cricuit would be easy enough, and the power draw would be minimial when on household, or even 12V.