How do I choose a water filter?

The right water filter depends on what contaminants are in your water, your budget, and how much filtration you need. Gravity filters are great for most households with no installation required. Reverse osmosis offers the most thorough filtration. Pitcher filters are convenient but limited. We recommend starting with a water quality report from your municipality to understand what you're filtering for.

What is the healthiest water filtration system?

Gravity-fed filters and reverse osmosis systems are generally considered the healthiest options. Gravity filters like the Big Berkey remove bacteria, heavy metals, and PFAS without electricity or installation. Reverse osmosis removes the broadest range of contaminants including fluoride, nitrates, and microplastics. Both are significantly more effective than standard pitcher filters.

Do water filters remove PFAS and microplastics?

Not all water filters remove PFAS and microplastics — it depends on the filtration technology. Gravity-fed filters like the Big Berkey and reverse osmosis systems are among the most effective at removing both. Standard pitcher filters and basic carbon filters are generally not rated for PFAS or microplastic removal. Always check the filter's independent test certifications before buying.

What's the best gravity water filter?

The Big Berkey is our top gravity filter recommendation. It requires no electricity or plumbing, removes a wide range of contaminants including PFAS, heavy metals, bacteria, and chlorine, and is built to last for years. It's ideal for countertop use and works even with untreated water sources, making it one of the most versatile and trusted options available.

Is reverse osmosis water safe to drink?

Yes, reverse osmosis water is safe to drink. RO systems are highly effective at removing contaminants including PFAS, nitrates, fluoride, lead, and microplastics. One consideration is that RO also removes beneficial minerals like calcium and magnesium. If this is a concern, look for an RO system with a remineralization filter stage, which adds healthy minerals back into the water after filtration.

Are water purification tablets safe?

Water purification tablets are safe for emergency or short-term use. They effectively kill bacteria and viruses, but they don't remove heavy metals, PFAS, or microplastics. For everyday drinking water at home, a quality filtration system like a gravity filter or reverse osmosis unit is a much better long-term solution than relying on purification tablets.

Water Filters

Drinking Water Filters

Shower and Bath Filters

Replacement Filters

Whole House Filters

Pitchers

Water Filter Guide 📖

Choosing the right water filter is one of the most impactful things you can do for your family's health. After years of researching water filtration systems — from gravity filters and reverse osmosis to pitcher filters and whole-house systems — we've curated only the options we'd use in our own homes. Every filter below has been vetted to remove the contaminants that matter most, including PFAS, chlorine, microplastics, and heavy metals.

How to Choose the Best Water Filter

Not all water filters are created equal. The right system depends on what's in your water, your budget, and how much filtration you need. Here's how we think about it.

Gravity Filters: Simple & Effective

Gravity-fed systems like the Big Berkey are our top pick for most households. They require no installation, no electricity, and no plumbing — just pour water in the top and gravity does the work. They're excellent at removing a wide range of contaminants including PFAS, heavy metals, and bacteria.

Reverse Osmosis: The Most Thorough Option

If you want the most comprehensive filtration available, reverse osmosis (RO) is hard to beat. RO systems remove up to 99% of contaminants including nitrates, fluoride, and microplastics. The trade-off is that they require under-sink installation and waste some water in the process.

Pitcher Filters: Convenient but Limited

Pitcher filters like Brita are convenient and affordable, but they're not designed to remove PFAS, heavy metals, or microplastics. We recommend them only as a starting point — not as a long-term solution for households concerned about water quality.

How We Choose Water Filters

Every filter in our shop has been evaluated for its ability to remove the contaminants most commonly found in US tap water, including PFAS, chlorine byproducts, lead, and microplastics. We prioritize systems with independent third-party testing and transparent performance data. Want the full breakdown? Read our complete guide: How to Choose the Best Water Filter System

We screen water filters for: verified contaminant reduction claims — we require NSF/ANSI certification or independent third-party laboratory testing, not manufacturer claims alone; NSF/ANSI 53 certification for health-based contaminant reduction (lead, VOCs, cysts, PFAS where applicable); NSF/ANSI 58 for reverse osmosis systems; NSF/ANSI 42 for aesthetic contaminants (chlorine, taste, odor); and for PFAS specifically, we look for NSF/ANSI 58 or NSF P473 certification for PFAS reduction, as this is an emerging standard and many filters claim PFAS removal without certification. We also screen filter materials for secondary contamination — some filter housings, membranes, and cartridge components can leach plasticizers, BPA, or other compounds into filtered water, defeating the purpose; we prefer filters with NSF/ANSI 61 certification for materials in contact with drinking water. We evaluate filter capacity, replacement frequency, and cost-per-gallon as part of our overall assessment — a filter that requires frequent replacement or fails at real-world flow rates isn’t practical regardless of its certification. We do not carry filters that rely solely on marketing claims without independent testing data.

Water Filter FAQs

The right water filter depends on what contaminants are in your water, your budget, and how much filtration you need. Gravity filters are great for most households with no installation required. Reverse osmosis offers the most thorough filtration. Pitcher filters are convenient but limited. We recommend starting with a water quality report from your municipality to understand what you're filtering for.
Gravity-fed filters and reverse osmosis systems are generally considered the healthiest options. Gravity filters like the Big Berkey remove bacteria, heavy metals, and PFAS without electricity or installation. Reverse osmosis removes the broadest range of contaminants including fluoride, nitrates, and microplastics. Both are significantly more effective than standard pitcher filters.
Not all water filters remove PFAS and microplastics — it depends on the filtration technology. Gravity-fed filters like the Big Berkey and reverse osmosis systems are among the most effective at removing both. Standard pitcher filters and basic carbon filters are generally not rated for PFAS or microplastic removal. Always check the filter's independent test certifications before buying.
The Big Berkey is our top gravity filter recommendation. It requires no electricity or plumbing, removes a wide range of contaminants including PFAS, heavy metals, bacteria, and chlorine, and is built to last for years. It's ideal for countertop use and works even with untreated water sources, making it one of the most versatile and trusted options available.
Yes, reverse osmosis water is safe to drink. RO systems are highly effective at removing contaminants including PFAS, nitrates, fluoride, lead, and microplastics. One consideration is that RO also removes beneficial minerals like calcium and magnesium. If this is a concern, look for an RO system with a remineralization filter stage, which adds healthy minerals back into the water after filtration.
Water purification tablets are safe for emergency or short-term use. They effectively kill bacteria and viruses, but they don't remove heavy metals, PFAS, or microplastics. For everyday drinking water at home, a quality filtration system like a gravity filter or reverse osmosis unit is a much better long-term solution than relying on purification tablets.

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