TL;DR
UV disinfection is the treatment of well or household water by passing it across an ultraviolet lamp whose 254-nanometer light scrambles the DNA of bacteria, viruses, and parasites like Giardia and Cryptosporidium, leaving nothing behind in the water but light. Systems certified to NSF/ANSI 55 Class A are rated for disinfecting contaminated supplies, delivering a 40 mJ/cm2 dose at rated flow.
What it means
UV disinfection is the treatment of well or household water by passing it across an ultraviolet lamp whose 254-nanometer light scrambles the DNA of bacteria, viruses, and parasites like Giardia and Cryptosporidium, leaving nothing behind in the water but light. Systems certified to NSF/ANSI 55 Class A are rated for disinfecting contaminated supplies, delivering a 40 mJ/cm2 dose at rated flow. The catch is that UV only works on clear water, so sediment prefilters and hardness or iron treatment come first, and the lamp needs annual replacement since output fades long before it burns out.
Where it sits in the glossary
UV disinfection is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
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