Water Filter Guru

09/03/2026

Our baseline lab sample detected more than a dozen contaminants, including fluoride, uranium, nitrate, copper, and two disinfection byproducts: bromoform and dibromochloromethane.

Full Video: https://youtu.be/2CnSsCBelJ0?si=wMq4U1yMAPnerVxQ

09/02/2026

The AquaTru Under Sink Gen 2 delivered the best TDS reduction I’ve seen from an RO system—but it has one important weakness to know before buying. Here’s how its 4-stage filtration and 1.7-gallon storage tank work.

Full Video: https://youtu.be/2CnSsCBelJ0?si=wMq4U1yMAPnerVxQ

09/01/2026

The AquaTru Under Sink did an excellent job reducing contaminants. It eliminated every health-related contaminant above the HGL in the baseline water and greatly reduced almost everything else.

Full Video: https://youtu.be/2CnSsCBelJ0?si=wMq4U1yMAPnerVxQ

08/31/2026

IAPMO certified for all 84 contaminants it claims to reduce across 4 NSF/ANSI standards. It also delivered the lowest TDS and smallest TDS creep I’ve measured on an RO system—just 2 PPM between draws.

Full Video: https://youtu.be/2CnSsCBelJ0?si=wMq4U1yMAPnerVxQ

08/30/2026

If you want to filter your water without the hassle of a difficult installation, comparing AquaTru vs Rorra makes sense as these are two no-fuss countertop systems that are worth consideration.

Compare AquaTru vs Rorra based on lab testing, contaminant removal, certifications, cost, maintenance, and overall performance.

08/29/2026

The Hammerhead has a mostly metal body and focuses heavily on chlorine reduction. But does it actually improve shower water quality? We put it to the test.

Full Video: https://youtu.be/jDGUkH9LVUU?si=hUXgKgTAdrPtQ7PK

08/27/2026

The Hammerhead Shower Filter earned an overall weighted score of 7.45/10. But can it actually help with hard water? Check out the full review and let us know what we should test next.

Full Video: https://youtu.be/jDGUkH9LVUU?si=hUXgKgTAdrPtQ7PK

08/26/2026

The Hammerhead Shower Filter costs about $110 upfront, with $34.95 replacement cartridges. At the recommended 3-month replacement schedule, that’s about $139 a year to maintain.

Full Video: https://youtu.be/jDGUkH9LVUU?si=hUXgKgTAdrPtQ7PK

08/25/2026

We installed and tested the Kind Water Softener S-650 in our own home, and collected real world usage data and a certified lab analysis of its performance.

The Kind S-650 is a salt-based water softener that’s said to “eliminate hardness minerals” and “deliver truly soft water” throughout your home’s fixtures and plumbing.

We put those claims to the test.

Overall Score: 8.69

How We Test & Score

10.00 Softening Efficiency

7.00 Operating Efficiency

6.00 Certification

8.10 Flow & Pressure

8.65 Company

8.28 Build & Control Valve

8.50 Setup

7.00 Noise

Buy It If

You’re looking to treat very hard city water or well water.

You want consistently soft water, even as the system approaches regeneration.

You don’t want issues with pressure drop.

You value smart features, like Bluetooth monitoring and demand-based regeneration.

Skip It If

You want to keep your water usage as low as possible (this system uses more water when it regenerates than many similar models).

This Kind Water Softener S-650 review covers real world usage data for hardness removal, salt efficiency, flow rate, pressure drop, and more.