Viqua PRO20
#2 in Over 12 GPMFull 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$3,840
3.6/5
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.
- 30 GPM at 40 mJ/cm²Flow
- Class ANSF/ANSI 55
- MercuryLamp
- 5 yearsWarranty
Check price at Amazon$5,030
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Certified by NSF to NSF/ANSI 55 Class A at 30 GPM, enough for a farm or small commercial building
- UV sensor plus flow meter show the real dose, and a plug in valve can stop water if it drops
- Amalgam lamp lasts about two years between changes
- 5 year controller and 10 year chamber warranty
Cons
- The most expensive unit here by a wide margin
- A genuine 602856 lamp is about $405 on Amazon
- Must be mounted vertically, with a 41 in chamber
- The shutoff valve is sold separately
The Viqua PRO family
Every Viqua PRO model we rank, smallest first. Ratings compare each against its own flow.
| Model | Flow | Rating | Price |
|---|---|---|---|
| Viqua PRO10 | 10 GPM at 40 mJ/cm² | 3.4/5 | $3,174.98 |
| Viqua PRO20 | 20 GPM at 40 mJ/cm² | 3.6/5 | $3,840 |
| Viqua PRO30 (this one) | 30 GPM at 40 mJ/cm² | 3.6/5 | $5,030 |
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its flow. How we rank explains each one.
Specifications
| Model number | 650659 |
|---|---|
| Disinfection | |
| Rated flow | 30 GPM at 40 mJ/cm² |
| NSF/ANSI 55 | Class A |
| Lamp | Mercury |
| Lamp power | 210 W |
| Lamp life | 18,000 hours |
| Monitoring | |
| UV intensity sensor | Yes |
| Lamp failure alarm | Yes |
| Lamp change countdown | Yes |
| Shutoff valve | Yes |
| Build | |
| Chamber | 316L stainless steel |
| Ports | 1.2 in |
| Maximum pressure | 125 psi |
| Voltage | 120 V |
| Warranty | 5 years |
Alternatives in this flow
Viqua VH410M
#3 in Over 12 GPMFull 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$1,310
Luminor Blackcomb LB5-201
#4 in Over 12 GPMFull review
A large home unit with a published Class A dose flow and a 3 year controller warranty, for less than Viqua’s monitored models. Add a sensor if no one tests the water.
Amazon $1,069.14$1,069.14
Compare
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