Head-to-head · Best Reverse Osmosis Systems

APEC ROES-50 Essence vs Waterdrop G3P800

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

The short answer

Waterdrop G3P800 comes out ahead by a narrow margin (4.5 vs 4.7). The gap is mostly about Households that want the fastest, most space-efficient certified RO water and don't mind paying a premium for a smart tankless system. — read the strengths below before deciding.

Ranked #3 in Best Reverse Osmosis Systems

APEC ROES-50 Essence

4.5

$199.95as of Jul 1

The APEC ROES-50 Essence is the reliable-workhorse RO pick, a WQA Gold Seal NSF/ANSI 58 certified 5-stage system that TechGearLab scored 89 out of 100, the highest tested score in this roundup. Lab testing brought every critical contaminant, lead, arsenic, uranium, PFNA, to undetectable levels. It lacks remineralization and uses a space-hungry tank, but as a proven, durable, high-performing pure-RO system at a fair price, it's outstanding.

Strengths

— WQA Gold Seal certified to NSF/ANSI 58 for TDS reduction
— TechGearLab scored it 89/100, bringing every critical contaminant to undetectable levels
— Reliable 5-stage filtration removing up to 99% of contaminants

Watch-outs

— No remineralization stage, so beneficial minerals are removed
— Tank takes up significant under-sink space
— Slower dispensing and more water waste than tankless systems

$199.95 · Check Price on Amazon Full review →

Higher ratedRanked #1 in Best Reverse Osmosis Systems

Waterdrop G3P800

4.7

$849as of Jul 1

The Waterdrop G3P800 is the best overall reverse osmosis system, a tankless 800 GPD unit that's NSF/ANSI 42, 53, 58 and 372 certified and dispenses water fast with no storage tank. It posted one of the best efficiency ratios of any tankless RO tested at 3:1 pure-to-drain, and lab testing confirmed 93-95% TDS reduction. Its only real gaps are price and the lack of built-in remineralization, which Waterdrop sells separately.

Strengths

— NSF/ANSI 42, 53, 58 and 372 certified, covering taste, health contaminants, TDS and lead-free materials
— Tankless 800 GPD design dispenses fast and saves under-sink space
— Excellent 3:1 pure-to-drain efficiency, among the best of any tankless RO tested

Watch-outs

— Premium price versus traditional tank-based RO systems
— No built-in remineralization; water can taste flat without the add-on
— Requires electricity and a drain connection

$849 · Check Price on Amazon Full review →

How they stack up

APEC ROES-50 Essence

A pure-RO alternative to the remineralizing iSpring RCC7AK and APEC ROES-PH75, with the highest tested score in this group. Cheaper and simpler than the tankless Waterdrop G3P800 and Waterdrop D6, but with a bulkier tank and slower dispensing.

Waterdrop G3P800

More certified standards and faster flow than the tank-based iSpring RCC7AK and APEC ROES-50, and a higher GPD than the Waterdrop D6. Unlike the iSpring RCC7AK and APEC ROES-PH75, it doesn't include remineralization, trading that for tankless speed and efficiency.

Specs side-by-side

Spec	APEC ROES-50 Essence	Waterdrop G3P800
System Type	5-stage tank RO	Tankless RO
Flow Rate	50 GPD	800 GPD
Certifications	WQA Gold Seal Certified	NSF/ANSI 42, 53, 58, 372
TDS Reduction	Up to 99%	93-95% (lab tested)
Contaminants Removed	Up to 99%	1,000+ including PFAS, fluoride, chromium
Purification Stages	Extra high-capacity stage 1-3	10-Stage Filtration
Tank Capacity	4-gallon storage	4-gallon storage

← See the full ranking of best reverse osmosis systems