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Choosing a System: How do I know what size UV unit I need?Updated 3 months ago

If you draw from a private water supply, it is recommended that you treat the water for your entire home. To assure your highest satisfaction, please choose the right size (gpm) of UV system that matches your household peak demand flow rate. This is simply a measure of how much water can flow through your main water line if all the water outlets were opened at once.

Typically, a North American house might have a maximum flow rate of 7 GPM (26 LPM), while a larger home might reach 15 GPM (56 LPM) or more. You may also determine the flow rate you need based on the number of bathrooms in your home.

Number of Bathrooms in Your HomeFlow Rates (in gpm)
1 Bathroom5
2 Bathroom8.5
3 Bathroom12
4 Bathroom15.5
5 Bathroom19
6 Bathroom22.5
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