The right countertop RO if UV matters — understand the NSF 372 claim first
The Aigerri delivers 5-stage RO with UV sterilization at $249.98 — the only budget countertop RO we've reviewed that includes both. The 4.7-star rating on 196 reviews and 500+ monthly sales are real signals. Before buying, understand one important nuance: the NSF/ANSI 372 certification certifies lead-free materials only — it does not certify contaminant removal performance. The RO membrane still removes contaminants and the UV stage inactivates microorganisms — that's not in question. But buyers expecting NSF 58-level verified performance should note the distinction.
- UV sterilization — only budget countertop RO with this
- 4.7 stars on 196 reviews
- 500+ monthly sales at $249.98
- 5-stage RO filtration
- BPA-free food-grade construction
- 5L tank — larger than DREO's 3L
- Filter change indicator
- Self-cleaning function
What we like
- NSF/ANSI 372 = lead-free materials only (not contaminant removal)
- No TDS display (DREO has this at $80 less)
- No NSF 58 contaminant removal certification
- Lesser-known brand in water filtration
What to know
NSF/ANSI 372 certifies that the materials in the Aigerri's components don't leach lead into the water. It does not certify that the system removes contaminants from your source water. It is a component materials safety standard — equivalent to saying the plastic and metal parts are lead-free — not a filtration performance certification. NSF 58 is the standard that verifies RO contaminant removal. The Aigerri does not hold NSF 58. The RO membrane still removes contaminants through normal reverse osmosis physics, but that performance is not independently verified to NSF standards.
Specs at a Glance
| Price | $249.98 (list $399.99) |
| Filtration stages | 5-stage RO |
| UV sterilization | Yes — included |
| Tank capacity | 5L |
| NSF certification | NSF/ANSI 372 (lead-free materials only) |
| TDS display | No |
| Self-cleaning | Yes |
| Filter change indicator | Yes |
| Construction | BPA-free food-grade |
| Amazon rating | 4.7 stars (196 reviews) · 500+ monthly sales |
Why UV sterilization matters
UV sterilization is the Aigerri's key differentiator. At this price point, no other countertop RO on Amazon includes a UV stage. RO membranes are extremely effective at removing dissolved contaminants — lead, fluoride, arsenic, nitrates, PFAS — but they don't guarantee elimination of all microorganisms. UV light inactivates bacteria, viruses, and protozoa by disrupting their DNA, preventing reproduction.
For municipal water where microbial treatment is handled by chlorination, UV is a redundant backup. For well water, aging plumbing, or any situation with bacterial concerns, UV adds meaningful protection. The SimPure Y7P-BW also includes UV — at $369.99 with NSF 58 certification. The Aigerri is the only option under $250 with UV.
How it compares
| Feature | Aigerri ($249) | DREO ($169) | SimPure Y7P-BW ($369) |
|---|---|---|---|
| Price | $249.98 | $169.99 | $369.99 |
| UV sterilization | Yes | No | Yes |
| NSF certification | 372 only* | None | NSF 58 |
| TDS display | No | Yes | Yes |
| Tank capacity | 5L | 3L | 3L pitcher |
| No installation | Yes | Yes | Yes |
| Best for | Budget + UV | Budget + monitoring | UV + certified |
*NSF/ANSI 372 certifies lead-free materials only, not contaminant removal.
Who should buy the Aigerri
Buy the Aigerri if: UV sterilization is a priority and you want to stay under $250. If you're on well water, have aging pipes, or want the extra layer of microbial protection, no other countertop RO at this price includes UV. The 5L tank is also larger than most competitors.
Consider DREO instead if: you want real-time TDS monitoring and budget is tighter. The DREO's TDS display lets you see filtration performance without buying a separate meter, and it costs $80 less. See our DREO review.
Consider SimPure Y7P-BW instead if: you want UV plus NSF 58 certification. The Y7P-BW costs $369.99 but holds NSF 58 that the Aigerri doesn't. See our SimPure Y7P-BW review.
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