iSpring US31 Classic 3-Stage Under Sink Water Filtration System for Drinking, Tankless, High Capacity, Sediment + Carbon + Carbon (Newest Version)
About this item
- [Classic Drinking Filter]:The water flows through PP sediment filtration, dual CTO carbon filtration, and the 2nd layer contains unique CTO filtration. It removes common sediments in drinking water, like dust, sand, particles, dirt and rust. Effectively removes PFAS, heavy metals, harmful chemicals, cloudiness, colors and more. It removes not only harmful pollutants but also chlorine taste and odor.
- [Fresh Healthy Water Supplier]: The on-demand fast flow rate of the iSpring US31 allows it to meet the widest possible range of needs in your home. Up to 20x more effective than the common water pitcher dispenser. Flow Rate: Up to 1GPM depending on source water pressure. Maxim Pressure: 90psi. It washes fresh produce like fruit and vegetables, brings health protection, can provide your entire family with delicious, clean water straight from your tap.
- [Excellent Quality and Design]: Features beautiful European-designed brushed nickel all-metal faucet and clear see-through 1st stage housing. Clear see-through 1st stage housing makes filter inspection a snap. Manufactured to comply strictly with FDA standards and tested by independent third party against NSF/ANSI standards (42, 53, 61) for water quality, material safety and structural integrity.
- [Easy to Install and Maintain]: This system is designed for easy installation, low maintenance, and features dual carbon block filters along with a high-capacity sediment filter. The sediment filter protects and extends the life of your system, while the carbon block filters work to remove many harmful contaminants. You can replace the filter every 6 to 12 months, judged by the water’s taste.
- [TDS Note and Customer Services]: This under sink water filter will not reduce the TDS of the incoming water. Instead, it keeps the healthy minerals in your water. If you are interested in a filter that removes TDS, please consider a iSpring reverse osmosis system.Backed by a 1-year Manufacturer with lifetime support from Atlanta, GA USA. For any issue or concern, please don't hesitate to contact us.
Frequently Bought Together

iSpring US31 Classic 3-Stage Under Sink Water Filtration System for Drinking, Tankless, High Capacity, Sediment + Carbon + Carbon (Newest Version)
$142.99
- Availability: In Stock
- Model: US31
- Manufacturer: iSpring
Write Review

2018-10-24
Build quality of the filter system is pretty darn good! Very solid filter holders, sheet metal bracket is a thick enough gauge, fittings and valves feel good and solid, and it was supplied with a full roll of pipe tape plus a TON of tubing (50 ft if i had to guess).
The faucet install was super easy, but it doesnt feel as quality as the filter system. The curved downspout wiggles in the base a little bit. Really not a big deal for the price i guess. The directions were very easy to follow- I got it in the mail and installed in an hour! The water comes out from the supplied faucet a tad more aerated than i’d like (if you fill a glass quickly, the water appears all white from the little air bubbles), but quickly dissipates. We did a taste test vs. tap- huge huge difference from our San Jose tap water. Bye bye Brita!
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US31 Manual