SimPure · Under-sink reverse osmosis
SimPure T1-400: what it removes and what it costs
Model: T1-400 8-stage tankless (T1-400ALK alkaline version same price)
The SimPure T1-400 has no certifier listing for any of the contaminants we track. SimPure also claims PFAS, lead, chlorine and fluoride from lab tests that are not certification. For 2 people drinking and cooking with it, replacement filters cost about $187 a year, and it sends about 136 gallons a year to the drain.
0
certified reductions we track
—
filters per gallon at rated life
Price checked 2026-10-23. We may earn a commission.
What the SimPure T1-400 removes
"Certified" means a certifier (NSF, WQA, IAPMO or CSA) lists this exact product for that reduction claim; the listing is linked. "Brand test only" means SimPure cites a lab report but no certifier lists the claim. See certified vs. tested.
Not verified, either way (no certification or brand claim): Chloramine, Microplastics, Cysts, VOCs, Bacteria and viruses, Iron, Uranium, 1,4-dioxane.
What it costs to run
Yearly cost = replacements per year × filter price, for each filter it uses; a filter is replaced at its gallon rating or its month limit, whichever comes first, plus the water sent to the drain at an average water and sewer price. Water use: drinking and cooking water (0.28 gallons per person a day, EPA's average adult intake).
| Household | Gallons a year | Filters a year | Drain water | Total a year | Per gallon |
|---|---|---|---|---|---|
| 1 person | 102 | $187 | 68 gal ($1) | $188 | 184¢ |
| 2 people | 204 | $187 | 136 gal ($3) | $190 | 93¢ |
| 4 people | 409 | $187 | 273 gal ($6) | $193 | 47¢ |
Rated production is 400 gallons a day; 2 people need about 0.56 — well within it. Colder water and lower pressure reduce actual output.
Replacement filters
| Filter | Rated life (gallons) | Rated life (months) | Price |
|---|---|---|---|
| PP sediment | — | 6 Source note | $17.99 Source note |
| CTO carbon block | — | 6 Source note | $19.99 Source note |
| T33 composite carbon post filter | — | 6 Source note | $28.99 Source note |
| RO membrane | — | 12 Source noteBrand comparison table: RO 12 months simpurelife.com | $52.99 Source note |
Specs
- Type
- Under-sink reverse osmosis
- Price
- $350
Source note
List $349.99; brand comparison table showed $249.99 ($100 off) 2026-10-23 simpurelife.com
- Installation
- DIY (under-sink or inline fittings)
- Rated production
- 400 gallons per day
Source note
- Pure to drain
- 1.5:1
Source note
- Flow rate
- 0.28 gal/min
Source note
- Needs power
- Yes
- Remineralization
- No
Compare the SimPure T1-400
Common questions
What does the SimPure T1-400 remove?
The SimPure T1-400 has no certifier listing for any of the contaminants we track. SimPure also claims PFAS, lead, chlorine and fluoride from lab tests that are not certification. For 2 people drinking and cooking with it, replacement filters cost about $187 a year, and it sends about 136 gallons a year to the drain.
Does the SimPure T1-400 remove PFAS?
SimPure claims PFAS reduction from lab tests by SGS-CSTC Ningbo (report NBF23-0005815-01, 2023, client Membrane Solutions), but there is no certifier listing for it.
How much does the SimPure T1-400 cost to run?
About $190 a year for 2 people ($188 for 1, $193 for 4), counting replacement filters and the water sent to the drain, for drinking and cooking water (0.28 gallons per person a day, EPA's average adult intake).
Data checked 2026-10-23. 102 filters tracked.