A Black Friday "deal" is often a normal price next to an inflated list price. Here a UV water purifier only counts as on sale when its checked price is at least 15% below its own typical price over the last 90 days, from our price history. The best-rated models are listed too, since many are good value without a sale. See deals in every category.
On sale now
No UV water purifier rated 3.8 or higher is 15% or more below its typical price at the last price check (November 2, 2026). Prices are rechecked through the sales; this list updates when one drops. See the recent price changes.
Best buys at their normal price
The top-rated models in each flow. A sale on one of these is worth more than a big discount on a weaker model.
Best UV Water Purifiers Up to 12 GPM
- Viqua PRO10#1 of 9Full review
For a home whose well, lender or health department needs a certified Class A system. Overkill for a cabin that just wants a budget backstop.
Amazon $3,174.98$3,174.9810 GPMClass AMercury - Luminor Blackcomb LB5-151#2 of 9Full review
A well built Canadian unit with an honest 12 GPM rating at the full dose, for a typical well home. Buy the LB6 version if you want a sensor from day one.
Amazon $840.15$840.1512 GPMNoMercury - HQUA OWS-12#3 of 9Full review
A bare bones budget UV for a cabin or a well that already passes bacteria tests. Too little is published to rely on it for a known problem.
Amazon $199.99$199.9912 GPMNoMercury
Best High Flow UV Water Purifiers (Over 12 GPM)
- Viqua PRO30#1 of 9Full review
For a farm, small business or very large home that needs certified Class A treatment at high flow. Most homes are better served by the PRO20 or smaller.
Amazon $5,030$5,03030 GPMClass AMercury - Viqua PRO20#2 of 9Full review
The certified pick for a large home or a small business on a private well. It costs a lot, but the dose is measured and certified.
Amazon $3,840$3,84020 GPMClass AMercury - Viqua VH410M#3 of 9Full review
The monitored version of Viqua’s large home unit, for well owners who want to know the dose is actually being delivered. Worth the premium over the plain VH410 if no one checks the water regularly.
Amazon $1,310$1,31014 GPMNoMercury
Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.