SimPure water filter review: lab-tested, not certified

I went through SimPure’s US store on October 14, 2026 and its Amazon listings on October 15, 2026. The store shows a regular price and often a lower one at checkout, so the table gives the regular price.

The T1-400 and T1-400ALK differ only in the last stage: the ALK adds minerals back, and SimPure’s Amazon listing says its TDS reading won’t drop to 0. Whether RO water needs minerals back is covered in is reverse osmosis water good for you.

The DB20P-3KDF whole house system runs water through three 20 by 4.5-inch cartridges: sediment, granular carbon and a carbon block, per its Amazon listing, at 25 to 90 psi. I found no certifier listing for it either. Listed whole house systems are in the best whole house water filters.

On October 14, 2026, the store also sold a pitcher, DP06, for $29.99, a $19.99 shower filter, and spin-down sediment filters from $55.99.

No. On October 14 and 15, 2026, I searched the NSF, IAPMO and WQA listings for SimPure and found no system. NSF returns “No Matching Products Found” for the name.

NSF does list Membrane Solutions, a company in Auburn, Washington, with a factory in China. SimPure’s store sells Membrane Solutions straws and bottles, and NSF’s list for the company includes membranes named for SimPure models: ROULP-Y7P-100, ROULP-Y7T-100, ROULP-Y9-300, ROULP-T1-400 and ROULP-Q3-600. All 64 membranes are certified to NSF/ANSI 58 for “material requirements only,” and the claim column is empty. That covers the membrane’s materials, not what it reduces.

The only Membrane Solutions products NSF lists for a reduction are two straw filters, S1 and S2: particulates under NSF/ANSI 42 and microplastics under NSF/ANSI 401.

SimPure’s product pages say “Tested by SGS - Against NSF/ANSI 58 standards” and link an SGS report. Testing to a standard isn’t a listing. For the Y7P-BW, SimPure cites these SGS figures: lead above 98.46%, arsenic above 99.65%, fluoride above 97.28%, PFOA/PFOS above 98.75%, nitrate above 96.26% and TDS above 98.64%. No certifier has listed them, so read them as the brand’s numbers. The contaminants or other substances removed or reduced by this water treatment device are not necessarily in your water.

To see what your tap water has, start with a water test. How I read listings is in how we research.

These are the two SimPure systems in our database: one on the countertop, one under the sink.

The Y7P-BW wastes less water: one part to the drain for every four filtered, against two for every three on the T1-400ALK. What drain water and filters add to the bill is in reverse osmosis system cost.

The T1-400ALK has a booster pump, so it needs an outlet under the sink as well as a drain line and a faucet hole. SimPure lists 14.5 to 116 psi and tap water under 500 ppm TDS.

SimPure’s Amazon listing for the Y7P-BW says “418 GPD.” Its own spec table says 100 GPD and 8.8 ounces a minute, which works out to about 99 gallons a day. I use the brand’s table.

SimPure sells filter kits for 6 and 12 months. Here is what a year costs at the store’s regular prices on October 14, 2026.

On October 15, 2026, SimPure’s T1-400ALK page put the average annual cost at $109.99, but the 12-month kit in its store was $179.99: two PP, two carbon, two mineral filters and one RO filter. I use the kit price. Single filters cost $17.99 (PP), $19.99 (carbon), $28.99 (mineral) and $52.99 (RO). SimPure says to change them sooner if your tap water is above 200 ppm TDS.

On Amazon on October 15, 2026, a Y7P RO filter was $35 and a CF filter $23. For the whole house DB20P-3KDF, the listing gives 3 to 6 months for the carbon block and 6 to 12 for the sediment and carbon cartridges.

I read the Amazon review summaries for the Y7P-BW, the T1-400ALK and the DB20P-3KDF on October 15, 2026. Owners like the taste and the easy setup. Breakdowns and leaks are the most repeated complaints.

Y7P-BW. 4.2/5 from 3,711 ratings, with 11% one-star. 803 of 898 reviews that mention taste are positive, and 641 of 679 that mention ease of use. But 187 of 249 that mention reliability are negative, and 140 of 156 that mention leaks. Amazon’s summary says many owners report it stopped working after about seven months, leaking from the bottom.

T1-400ALK. 4.2/5 from 1,408 ratings, with 12% one-star. 373 of 413 reviews that mention quality are positive. 57 of 77 that mention reliability are negative, 52 of 78 on leaks, 40 of 72 on speed and 28 of 69 on noise. One owner wrote that a gallon took 45 minutes to fill.

DB20P-3KDF whole house. 4.5/5 from 526 ratings. 74 of 86 reviews that mention quality are positive, but 18 of 22 that mention durability are negative. Amazon’s summary notes a cracked metal inlet housing and a carbon filter broken on top.

SimPure offers a “1+1 Year Extended Warranty” on purchases from simpurelife.com and authorized resellers, and its site has an “Extended Warranty Registration” page. It also handles claims for units bought on Amazon, Walmart and eBay. A replacement may be factory refurbished or new, and it’s covered for the original period or 3 months, whichever is longer. A claim expires 90 days after you file it if it isn’t completed. SimPure’s phone line is 1-866-528-4572.

Returns run 30 days and cover orders from simpurelife.com. The unit has to be unused, in its original condition, with all accessories and proof of purchase. SimPure pays return shipping only for quality issues. Otherwise, you pay it. The refund arrives 3 to 7 business days after SimPure inspects the return, and orders of 10 or more units can’t be returned. Shipping is free.