Independent lab testing, cost analysis, 5 NSF certifications, and a straight answer to the most common question we get about AquaTru.
The AquaTru is the most independently certified countertop RO system available. In Water Filter Guru’s independent lab testing, the Carafe model scored 9.57/10 overall, eliminated 8 out of 10 detected health contaminants at 100% reduction, and held 5 NSF/ANSI certifications — more than most under-sink RO systems. The cost works out to $0.19/gallon, compared to $1–$3/gallon for bottled water. For renters, apartment dwellers, and anyone who won’t or can’t install plumbing, it’s the correct answer.
Water Filter Guru (Brian Campbell, WQA Certified Water Specialist) tested the AquaTru Carafe using SimpleLab Tap Score methodology on Colorado well water — one of the more demanding test conditions for a countertop system.
“The AquaTru Carafe is one of the only water filtration systems we have ever tested that uses technology certified for the reduction of 100% of all contaminants the manufacturer claims it can reduce.”— Brian Campbell, WQA CWS, Water Filter Guru (August 2024)
Contaminants eliminated at 100%: uranium, chloroform, fluoride, nitrate, copper, chloride, sulfate, molybdenum. Barium reduced 89.5%, strontium 91.9%. Modern Castle independent testing on NYC tap water produced health and aesthetic scores of 99/100.
Most consumer water filters hold one or two NSF certifications, often just for aesthetics. AquaTru holds five, each covering a distinct performance category:
| Standard | What it covers |
|---|---|
| NSF/ANSI 42 | Aesthetic effects — chlorine taste and odor, particulate reduction |
| NSF/ANSI 53 | Health effects — heavy metals, VOCs, cysts, turbidity |
| NSF/ANSI 58 | RO systems — TDS reduction, contaminant reduction claims |
| NSF/ANSI 372 | Lead-free materials — component materials safety |
| NSF/ANSI 401 | Emerging contaminants — PFOA/PFOS, pharmaceuticals, BPA, microplastics |
| Cost | AquaTru Carafe | Bottled water (2 people) |
|---|---|---|
| Upfront | $349 | $0 |
| Annual running cost | ~$60 (filters) | $730–$2,190 |
| 5-year total | ~$649 | $3,650–$10,950 |
| Plastic waste | Near zero | ~3,000 bottles/year |
Both models use the same filters, the same RO membrane, and hold the same 5 NSF certifications. The purified water quality is identical. The differences:
Carafe ($349): borosilicate glass storage, more compact, takes up less counter space, $100 cheaper upfront. Classic ($449): larger capacity (0.75 gal vs 0.625 gal), push-button dispenser, lower per-gallon filter cost ($0.11 vs $0.19), Smart/Wi-Fi model available. For most single users and couples: Carafe. For families or higher volume: Classic.