
NuvoH2O Home
Score: 65/100
EcoPure EP31
Score: 75/100Rankings

The EcoPure EP31 is a demand-initiated regeneration water softener designed for households of 1-4+ people, utilizing predictive technology to minimize salt and water consumption. It is NSF-certified against Standard 44 for hardness reduction and efficiency, and compatible with both municipal and private well water systems. However, its limited iron capacity and specific salt requirements may be drawbacks for some users.

NuvoH2O is a salt-free water conditioning system that utilizes CitraCharge, a citrus-based citric acid formula, to bind hard minerals like calcium and magnesium. This process prevents scale buildup on pipes and appliances while retaining beneficial minerals in the water, offering an eco-friendly alternative to traditional ion-exchange softeners. However, it does not produce true soft water for soap lathering and requires regular cartridge replacements.
| Attribute | ![]() | ![]() |
|---|---|---|
25 grains | 31,000 grainsbest | |
4 personsbest | 4 personsbest | |
| ↓ lower better | 24 inchesbest | 48 inches |
| ↓ lower better | 5 inchesbest | 15 inches |
| ↓ lower better | 5 inchesbest | 20.5 inches |
5 years | 10 yearsbest | |
100 PSI | 125 PSIbest | |
| ↓ lower better | 7 lbsbest | 82 lbs |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Build & Durability(2) | ||
Tank Material | Plastic | |
Warranty Length (years) | 5 years | 10 years |
Power & Compliance(2) | ||
Power Source | None | Electric (24V DC) |
Certifications | FDA | NSF/ANSI 44, 372, CSA |
Performance & Capacity(2) | ||
Grain Capacity (grains) | 25 grains | 31000 grains |
Operating Pressure (PSI) | 100 PSI | 125 PSI |
System & Control(4) | ||
Regeneration Control Type | None | Demand-initiated |
System Type | Salt-Free | Single Tank |
Salt Requirement | None | Low |
Display Type | LCD | |
Physical & Installation(4) | ||
Height (inches) | 24 inches | 48 inches |
Width (inches) | 5 inches | 15 inches |
Depth (inches) | 5 inches | 20.5 inches |
Weight (lbs) | 7 lbs | 82 lbs |


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

Professional reviewers characterize NuvoH2O as a distinct water treatment philosophy rather than a traditional softener. Experts highlight its eco-friendly nature and cost-effective operations due to the absence of salt, electricity, and wasted water.
Everyday users generally praise the system for its simplicity, low maintenance, and eco-friendly operation. Common themes include appreciation for improved appliance longevity and better water taste due to chlorine removal.
