How does a UV disinfection system work?
A UV lamp emits ultraviolet light at 254 nanometers wavelength, which penetrates microbial cell walls and disrupts DNA so bacteria, viruses, and cysts cannot reproduce. The process adds no chemicals to the water and leaves no taste or odor. Water must be clear for UV to be effective.
Is UV disinfection alone enough for well water?
UV kills biological contaminants but does not remove sediment, hardness, iron, or dissolved chemicals. For well water, UV is typically the final stage after sediment filtration, iron removal, and, if needed, carbon filtration. Pre-treatment ensures water clarity, which is essential for effective UV dosing.
What flow rate do I need for my home UV system?
AMPAC USA home UV systems cover 6 to 20 GPM. A household of four typically needs 8 to 12 GPM to meet peak demand. Sizing too small reduces contact time with the UV lamp, which lowers disinfection effectiveness. Always size for peak flow, not average daily use.
How often does the UV lamp need to be replaced?
UV lamps require annual replacement even if they appear to be working. Output degrades to below 70 percent of rated intensity after approximately 9,000 hours of continuous operation, which equals about one year. Reduced UV output means reduced pathogen kill rates, so replacement on schedule is critical.
Are AMPAC USA UV systems NSF certified?
Yes. AMPAC USA home UV systems carry NSF 55 Class A certification, which is the standard for residential UV disinfection systems intended to inactivate pathogenic bacteria and viruses. Class A systems deliver a minimum 40 mJ/cm2 UV dose at rated flow, meeting EPA and Health Canada guidelines.