iSpring US31-PF 3-Stage Under Sink Water Filtration System, SGS-Tested to Reduces up to 99% PFOA & PFOS, 3-Stage Filtration Reduces Sediment, Chlorine, Taste & Odor, 2.5" x 10"
iSpring US31-PF 3-Stage Under Sink Water Filtration System, SGS-Tested to Reduces up to 99% PFOA & PFOS, 3-Stage Filtration Reduces Sediment, Chlorine, Taste & Odor, 2.5" x 10"
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iSpring US31-PF 3-Stage Under Sink Water Filtration System, SGS-Tested to Reduces up to 99% PFOA & PFOS, 3-Stage Filtration Reduces Sediment, Chlorine, Taste & Odor, 2.5" x 10"

|9 ratings

Key item features

  • Advanced Filtration: SGS-tested, this 3-stage system effectively reduces up to 99% of PFOA & PFOS, sediment, chlorine, taste, and odor using high-performance carbon block technology.
  • Superior Performance: Features a robust 3-stage filtration with PP sediment, CTO, and a final CTO layer for comprehensive removal of PFAS, rust, dirt, and organic chemicals.
  • Consistent Flow: Delivers a fast flow rate of up to 1 GPM, providing a continuous supply of pure, refreshing water for various household needs.
  • Quality Construction: Crafted with top-tier materials, including a sleek European-style brushed nickel faucet and a clear first-stage housing for easy inspection.
  • Certified Standards: Thoroughly tested to meet NSF/ANSI standards (42, 53, 61) and FDA regulations, ensuring outstanding performance and durability.
  • Effortless Maintenance: Designed for straightforward installation and low maintenance, with recommended filter replacement every 6 to 12 months for optimal efficiency.
  • Mineral Preservation: Maintains the water's total dissolved solids (TDS) levels, preserving important minerals while providing clean drinking water.
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Current price is $170.99
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Sold and shipped by iSpring Water Systems, LLC
4.63063063063063 stars out of 5, based on 222 seller reviews(4.6)
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4.9 out of 5 stars
stars9 ratings9 reviews
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  1. 5 stars89% (8)
  2. 4 stars11% (1)
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Showing 1-3 of 9 reviews

Jan 17, 2026
mikew10_4521
5 out of 5 stars review

My favorite

[This review was collected as part of a promotion.] I'm so excited for this. It is absolutely wonderful. It comes with everything you need to install it and the installation was easy. My water tastes clean and crisp and refreshing. It filters the water and I highly recommend it

Review from influenster.com
Helpful?6L6AXYT39NDZ15044114951
Jan 27, 2026
tiffair_9170
5 out of 5 stars review

It's a winner.

[This review was collected as part of a promotion.] What an upgrade!!!! We had a filtered water spigot but I still wanted to try this product. It wasn't too hard for my husband to install. We have had water so we need the filtered water. My favorite feauture is that I can turn the spigot on and off. My other one that we replaced had to have a lever pushed down at all times. It's hard to fill the coffee pot that way and most of the time I'm to impatient for all that. Not anymore! Thank you!

Review from influenster.com
Helpful?6L6AXYT39NDZ15044114951
Jan 23, 2026
conoro9_1637
5 out of 5 stars review

Clean and Convenient 3-Stage Under-Sink Water Filt

[This review was collected as part of a promotion.] I'm really impressed with the iSpring US31-PF Classic 3-Stage Under Sink Water Filtration System. Its 3-stage filtration ensures clean and safe drinking water, and it's SGS-tested for PFAS, giving peace of mind about water quality. Installed under the sink, it saves space and is easy to use daily. The filtered water is clear, tastes natural, and has no strange odors. Overall, it's an excellent choice for families looking to improve their home drinking water.

Review from influenster.com
Helpful?6L6AXYT39NDZ15044114951