Viqua PRO30
#1 in Over 12 GPMFull 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$5,030
The Viqua PRO30 and the Viqua PRO20 are evenly matched, rated 3.6 and 3.6. The Viqua PRO20 costs $1,190 less ($3,840 vs $5,030).
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
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.
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every over 12 GPM UV water purifier; a clear win is highlighted. How we rank explains each one.
| Factor weight | Viqua PRO30 | Viqua PRO20 |
|---|---|---|
| Overall rating | 3.6/5 | 3.6/5 |
| Value 25% | 21 $167.67 per GPM ($5,030, 30 GPM at 40 mJ/cm²) | 16 $192 per GPM ($3,840, 20 GPM at 40 mJ/cm²) |
| Certification 20% | 100 NSF/ANSI 55 Class A | 100 NSF/ANSI 55 Class A |
| Monitoring 20% | 100 UV intensity sensor, lamp failure alarm, shutoff valve, lamp change countdown | 100 UV intensity sensor, lamp failure alarm, shutoff valve, lamp change countdown |
| Lamp life 10% | 44 18,000 hour mercury lamp | 44 18,000 hour mercury lamp |
| Warranty 25% | 44 5-year warranty | 44 5-year warranty |
Specifications
| Viqua PRO30 | Viqua PRO20 | |
|---|---|---|
| Disinfection | ||
| Rated flow | 30 GPM at 40 mJ/cm² | 20 GPM at 40 mJ/cm² |
| NSF/ANSI 55 | Class A | Class A |
| Lamp | Mercury | Mercury |
| Lamp power | 210 W | 140 W |
| Lamp life | 18,000 hours | 18,000 hours |
| Monitoring | ||
| UV intensity sensor | Yes | Yes |
| Lamp failure alarm | Yes | Yes |
| Lamp change countdown | Yes | Yes |
| Shutoff valve | Yes | Yes |
| Build | ||
| Chamber | 316L stainless steel | 316L stainless steel |
| Ports | 1.2 in | 1.2 in |
| Maximum pressure | 125 psi | 125 psi |
| Voltage | 120 V | 120 V |
| Warranty | 5 years | 5 years |