Ultraviolet (UV) Water Disinfection Systems

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Ultraviolet (UV) water disinfection systems use UV-C light to destroy 99.99% of bacteria, viruses, and parasites in your water supply — without chemicals, without changing the taste, and without wasting water. If you've tested positive for coliform bacteria or E. coli, or you simply want peace of mind that your well water is safe, a UV system is the most reliable and low-maintenance solution available. UV systems install on your main water line and treat every drop of water entering your home. We carry residential systems from 9 GPM to 18 GPM , plus replacement parts — bulbs, quartz sleeves, and control boxes. To learn more, read our Complete Guide to UV Water Disinfection . Call us at 800-460-5810 if you need help choosing the right UV system for your home or business. Choosing a UV System Sizing a UV system is based on your home's flow rate — how many gallons per minute (GPM) your household uses during peak demand. A good rule of thumb is the number of bathrooms: 1–2 Bathrooms: Viqua VH200 (9 GPM) — $895 3+ Bathrooms: Viqua VH410 (18 GPM) — $995 Commercial / High-Flow: Call us at 800-460-5810 for commercial UV sizing If you're unsure which system you need, call us at 800-460-5810 and we'll help you size it based on your water test and household. FAQs How does UV disinfection work? What does UV kill? What UV doesn't remove Who needs a UV system? VH200 vs VH410 Pre-treatment requirements Annual maintenance Annual operating cost Installation UV vs chlorination Warranty Q. How does UV water disinfection work? A. Water flows through a stainless steel chamber that houses a UV-C lamp inside a quartz sleeve. As water passes the lamp, UV light at 254 nm penetrates the cell walls of bacteria, viruses, and parasites — destroying their DNA so they can't reproduce or cause infection. The process is instant, chemical-free, and doesn't change the taste, smell, or chemistry of your water. Q. What does a UV system kill? A. UV disinfection eliminates 99.99% of waterborne microorgan