
Home Master Artesian TMAFC-ERP
Score: 88/100
Waterdrop G2
Score: 88/100Rankings

The Home Master TMAFC-ERP Artesian is a 7-stage under-sink reverse osmosis system that removes up to 99% of contaminants while adding calcium and magnesium for improved taste and alkaline pH. It features a patented 2-pass remineralization process and an optional permeate pump that reduces wastewater to a 1:1 ratio. Ideal for households seeking high-purity, remineralized drinking water with minimal maintenance.

The Waterdrop G2 is a compact, tankless under-sink RO system delivering 400 GPD with an exceptional 1:1 wastewater ratio. It features a space-saving design and optional remineralization, making it ideal for homes with limited cabinet space. However, it requires an electrical outlet and is restricted to indoor use.
| Attribute | ![]() | ![]() |
|---|---|---|
7 stagesbest | 7 stagesbest | |
50 gallons per day | 400 gallons per daybest | |
99 percentbest | — | |
2.2 gallonsbest | 0 gallons | |
99 countbest | 10 count | |
12 monthsbest | — | |
| ↓ lower better | 16 inches | 5.91 inchesbest |
| ↓ lower better | 12 inchesbest | 13.98 inches |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Compliance & Safety(1) | ||
Certifications | NSF Certified | NSF/ANSI 372, FCC |
Storage(1) | ||
Storage Tank Capacity (gallons) | 2.2 gallons | 0 gallons |
General(1) | ||
Installation Type | Under-sink | Under Sink |
Maintenance(1) | ||
Filter Lifespan (months) | 12 months | 12-24 months |
Design(2) | ||
System Width (inches) | 16.0 inches | 5.91 inches |
System Height (inches) | 12.0 inches | 13.98 inches |
Power(1) | ||
Power Requirement | false | true |
Performance(4) | ||
Daily Production Rate (gallons per day) | 50 gallons per day | 400 gallons per day |
Wastewater Ratio | 1:1 to 4:1 | 1:1 |
Contaminants Removed (count) | 99 count | 10 count |
Feed Water Pressure (PSI) | 40 PSI | PSI |
Features(1) | ||
Faucet Type | Chrome | Brushed Nickel |

Products in the top-left offer the best value (high score, low price).

Professional reviewers and editors praise the TMAFC-ERP for its innovative Full Contact remineralization, which addresses common issues like acidity and tank degradation found in traditional RO systems. Experts highlight the 98% contaminant removal rate, the hygienic modular design, and the extended 2,000-gallon filter life as key advantages over competitors.
Everyday consumers commonly praise the great-tasting alkaline water, the ease of tool-free filter swaps, and the significantly faster flow speed compared to standard systems. Recurring complaints focus on the high wastewater volume when the ERP pump is not used and occasional leaks during the initial setup phase.




Professional sources emphasize the system's efficiency and filtration effectiveness, highlighting the 400 GPD flow rate and 1:1 drain ratio as standout features.
The system maintains a 4.5-star rating, with common user praise focusing on fast water delivery, improved water quality, and the convenience of the space-saving design.