Under-sink reverse osmosis · checked 16 Oct 2026
iSpring RCC1UP-AK 7 Stage 100 GPD UnderSink RO Drinking Water…
Model RCC1UP-AK · replacement parts F10KU, F21KU100, F31KU100
Lead:Brand claim onlyPFAS:Brand claim only
Each claim, checked
What the brand says, what a certification listing shows for this model, and where each fact comes from. We read listings; we do not test products.
- Certified (listing checked)The certifier’s public listing shows this claim for this model.
- Brand says certifiedThe brand says certified; IAPMO’s listing does not show it. NSF can be checked by hand.
- Brand claim onlyThe brand claims it without citing a certification.
| Contaminant | Brand claim | Standard | Certifier | Confirmed? | Source, date checked |
|---|---|---|---|---|---|
| Lead | “removes up to 99% of over 1,000 harmful contaminants like PFAS, chlorine, fluoride, lead (removes up to 98%), arsenic, asbestos, calcium, sodium, and more.” brand source | – | – | Brand claim — no certification cited | brand pagechecked 16 Oct 2026 |
| PFAS (no compounds named) | Same statement as for Lead. brand source | – | – | Brand claim — no certification cited | brand pagechecked 16 Oct 2026 |
| Chlorine | Same statement as for Lead. brand source | – | – | Brand claim — no certification cited | brand pagechecked 16 Oct 2026 |
| Fluoride | Same statement as for Lead. brand source | – | – | Brand claim — no certification cited | brand pagechecked 16 Oct 2026 |
| Arsenic | Same statement as for Lead. brand source | – | – | Brand claim — no certification cited | brand pagechecked 16 Oct 2026 |
| Asbestos | Same statement as for Lead. brand source | – | – | Brand claim — no certification cited | brand pagechecked 16 Oct 2026 |
| Mercury | “capable of removing up to 99.99% of contaminants ... including arsenic, asbestos, chlorine, hormones, fluoride, lead (up to 98%), mercury” brand source | – | – | Brand claim — no certification cited | brand pagechecked 16 Oct 2026 |
| Pharmaceuticals | Same statement as for Mercury. brand source | – | – | Brand claim — no certification cited | brand pagechecked 16 Oct 2026 |
| Total dissolved solids (TDS) | “iSpring RO systems have exceeded the minimum requirements for NSF/ANSI standard 58. They should be giving an average TDS reduction rate of 90%+” brand source | NSF/ANSI 58 | – | Brand claim — no certification cited | brand pagechecked 16 Oct 2026 |
Filter changes, by the brand’s numbers
How often iSpring says to replace each part. Real filter life depends on how much water you use and what is in it.
| Part | Brand says replace every | Changes a year | Source, date checked |
|---|---|---|---|
| F10KU 1-year filter pack (2 sediment, 2 GAC, 2 carbon block, 1 post-carbon, 2 alkaline, 1 UV bulb; no RO membrane) | 1 year“1-Year Water Filtration Replacement Pack: ... designed for 7-stage RO water filtration systems RCC7AK-UV and RCC1UP-AK, providing a full year of filtration.” | 1 | brand sourcechecked 16 Oct 2026 |
| F21KU100 2-year replacement set (21 filters incl. 100 GPD RO membrane) | 2 years“21 pieces of 10" x 2.5" replacement water filters included, good for 2-year supply” | 1 every 2 years | brand sourcechecked 16 Oct 2026 |
| F31KU100 3-year replacement set (31 pieces incl. RO membrane and 3 UV bulbs) | 3 years“31 pieces of 10" x 2.5" Replacement Water Filters included, good for 3-year supply.” | 1 every 3 years | brand sourcechecked 16 Oct 2026 |
Certification listings found
No IAPMO R&T listing matched this model when we searched on 16 Oct 2026.
Check it yourself
NSF’s and WQA’s terms don’t allow automated lookups, so these links open their public listings for this model:
- NSF listing search: RCC1UP-AK
- NSF listing search: iSpring
- WQA listing search: RCC1UP-AK
- WQA listing search: iSpring
- IAPMO R&T listing directory