The Express Water ROELITE9 scores 6.3 and ranks 27th of 69 in Reverse Osmosis; the Aquasure Premier Advanced Alkaline 75 GPD scores 5.7 and ranks 44th of 69 in Reverse Osmosis. The ROELITE9 leads on build quality, the Premier Advanced Alkaline 75 GPD on value.
ValueExpress Water ROELITE9: 5Aquasure Premier Advanced Alkaline 75 GPD: 7 (higher)
Express WaterROELITE9
At three hundred dollars it costs more than the tankless Model 6 that produces six times as much water.
AquasurePremier Advanced Alkaline 75 GPD
Nothing recorded.
Build QualityExpress Water ROELITE9: 7 (higher)Aquasure Premier Advanced Alkaline 75 GPD: 6
Ease of InstallationExpress Water ROELITE9: 5Aquasure Premier Advanced Alkaline 75 GPD: 6 (higher)
Same score
Contaminant ReductionExpress Water ROELITE9: 8Aquasure Premier Advanced Alkaline 75 GPD: 8
Express WaterROELITE9
Five separate stages is a real architectural difference rather than a badge, and at nearly twice the weight of the standard chassis the build is visibly heavier.
Express Water publishes no pH range, no mineral output figures and holds no certification for this model, which for a product sold on mineral content is the central weakness.
AquasurePremier Advanced Alkaline 75 GPD
Aquasure's claimed 8.5 to 10 pH range is at the aggressive end of what remineralisation cartridges achieve, and the upper figure would be unusual in practice;
Certification CoverageExpress Water ROELITE9: 2Aquasure Premier Advanced Alkaline 75 GPD: 2
Express WaterROELITE9
Nothing recorded.
AquasurePremier Advanced Alkaline 75 GPD
no test data supports either end.
The RO hardware underneath is identical to the standard model, including the 1.5 to 1 drain ratio that is the best specification on either system.
Certification is unchanged and worth restating: Aquasure's only NSF listing covers two RO membrane part numbers for material and structural integrity, not for removing anything, and the lead-free faucet claim is a component materials certification.
Flow RateExpress Water ROELITE9: 5Aquasure Premier Advanced Alkaline 75 GPD: 5
Filter LifeExpress Water ROELITE9: 5Aquasure Premier Advanced Alkaline 75 GPD: 5
Warranty & SupportExpress Water ROELITE9: 1Aquasure Premier Advanced Alkaline 75 GPD: 1
Social score about the Express Water ROELITE9 and the Aquasure Premier Advanced Alkaline 75 GPD
RedditExpress Water ROELITE9: 6 (higher)Aquasure Premier Advanced Alkaline 75 GPD: 5
The Express Water ROELITE9 reading covers its product line; the Aquasure Premier Advanced Alkaline 75 GPD reading covers its product line.
Express WaterROELITE9
Read the full summary
Product-line. r/HydroHomies concludes Express Water's alkaline filtration does produce alkaline water but that strength drifts over cartridge life, which bears directly on a model sold on five mineral stages.
Wider r/WaterTreatment threads recommend the platform for taste and value while calling the install involved.
No thread names the Elite specifically.
AquasurePremier Advanced Alkaline 75 GPD
Read the full summary
Product-line.
Two r/WaterTreatment and r/HomeMaintenance threads cover the Premier RO platform this system is built on.
One owner reports 420 ppm TDS at the faucet on a new install, settling to about 360, which is a poor rejection figure; the second describes the Flowlok leak-detection disc deploying during a filter change when a drain-line fitting leaked, which reads as the safety feature working.
Nothing addresses the alkaline stage specifically, and the subreddit's general scepticism about alkaline water claims is background rather than evidence about this unit.
GoogleExpress Water ROELITE9: 7 (higher)Aquasure Premier Advanced Alkaline 75 GPD: 6
The Express Water ROELITE9 reading covers its product line; the Aquasure Premier Advanced Alkaline 75 GPD reading covers the whole brand.
Express WaterROELITE9
Read the full summary
Product-line.
WaterFilterGuru bench-tested the platform's RO5DX with Tap Score lab analysis at 8.13 overall and measured a remineralisation stage lifting pH to 9.0.
TapWaterData's certification audit records no certifier listing for the Elite, so its mineral claims rest entirely on Express Water's own data.
AquasurePremier Advanced Alkaline 75 GPD
Read the full summary
Brand-level.
Modernize and Quality Water Lab cover Aquasure through the Harmony softeners.
Dominick Plumbing notes the absence of NSF certification across the brand.
No third-party review of the Premier RO systems exists.
YouTubeExpress Water ROELITE9: —not scoredAquasure Premier Advanced Alkaline 75 GPD: 7
No usable source for the Express Water ROELITE9; the Aquasure Premier Advanced Alkaline 75 GPD reading covers its product line.
Express WaterROELITE9
Nothing recorded.
AquasurePremier Advanced Alkaline 75 GPD
Read the full summary
Product-line.
IrixGuy's Adventure Channel, 98,800 subscribers, has two independent owner reviews of the Premier RO - one after several months at 6,100 views and a several-years follow-up - and a separate third-party self-install walkthrough covers the same 4-stage system.
None names a specific capacity, so this is the Premier line rather than this model.
The alkaline stage is not addressed in any of them, and the RO roundups that bench-test at this price point do not include Aquasure.
Brand-level coverage is the Harmony softeners: DIY Homestead Projects at roughly 115,000 views, NKP Home Improvement at roughly 94,000, geminidrums at 15,000 on the fine mesh and IrixGuy's two-year owner review at 13,000.
AmazonExpress Water ROELITE9: 8 (higher)Aquasure Premier Advanced Alkaline 75 GPD: 6
The Aquasure Premier Advanced Alkaline 75 GPD reading covers its product line.
Express WaterROELITE9
Read the full summary
Product.
The Elite appears in Amazon's own Express Water comparison table at 4.1 from 40 ratings - a real pool above the ten-review floor, and the lowest-rated reverse osmosis system Express Water sells there.
Every sibling in the same table reads 4.4 to 4.6, so the gap is the finding rather than noise.
AquasurePremier Advanced Alkaline 75 GPD
Read the full summary
Product-line.
No separate Amazon listing for the alkaline 75 GPD configuration carries a readable rating; the replacement alkaline cartridge has its own pool and is a consumable, not the system.
The score falls back to the Premier 75 GPD at 4.4 from roughly 276, which is the same system without the remineralisation stage.
Owner reviewsExpress Water ROELITE9: 8Aquasure Premier Advanced Alkaline 75 GPD: 8
The Express Water ROELITE9 reading covers its product line; the Aquasure Premier Advanced Alkaline 75 GPD reading covers its product line.
Express WaterROELITE9
Read the full summary
Home Depot, Lowe's and Walmart all stock Express Water reverse osmosis systems, and the platform's listings carry their own review files.
No retailer listing specific to the Elite was found.
AquasurePremier Advanced Alkaline 75 GPD
Read the full summary
Home Depot lists this alkaline model at 4.0 of 5 from eight reviews, which is below the ten-review floor and not scorable on its own, so the figure used is the standard Premier Advanced at 4.5 of 5 from 41 reviews on the same RO hardware.
That pool is native, with verified-purchase entries and Aquasure replying under its own support address.
Scored a point below the standard model because the alkaline version's own eight-review file, thin as it is, points lower rather than higher, and because the 100 GPD Pro at 4.2 from 10 sits between them.
Express Water ROELITE9 vs Aquasure Premier Advanced Alkaline 75 GPD: pros and cons
Express WaterROELITE9 vs AquasurePremier Advanced Alkaline 75 GPD: common questions
Is the Express Water ROELITE9 better than the Aquasure Premier Advanced Alkaline 75 GPD?
On our scores, the Express Water ROELITE9 is ahead, 6.3 against 5.7. The Express Water ROELITE9 leads on build quality (7 against 6). The Aquasure Premier Advanced Alkaline 75 GPD leads on value (7 against 5) and ease of installation (6 against 5).
Which is cheaper, the Express Water ROELITE9 or the Aquasure Premier Advanced Alkaline 75 GPD?
The Aquasure Premier Advanced Alkaline 75 GPD, at $220 against $307: $87 less.
Which removes more contaminants, the Express Water ROELITE9 or the Aquasure Premier Advanced Alkaline 75 GPD?
The Express Water ROELITE9 lists 7 and the Aquasure Premier Advanced Alkaline 75 GPD lists 10, with 5 on both lists. Only the Aquasure Premier Advanced Alkaline 75 GPD lists Low pH, PFAS, Taste and Odor, Microplastics and VOCs.
What do owners say about the Express Water ROELITE9 and the Aquasure Premier Advanced Alkaline 75 GPD?
Across 4 independent sources scored for both, the Express Water ROELITE9 is ahead on Reddit, Google and Amazon; Owner reviews is level.
Scores calculated 11 November 2026 · Products excluded where fewer than two independent sources cover them · Researched and edited by Michael Ambrose · Unbroken Ads LLC · How we score