Think of a pre filter as the bouncer for your water system. It catches rust, sediment, iron, and other particles before they reach your main filter or appliances — extending the life of everything downstream.
Without one, your primary filter clogs faster, your appliances take more wear, and your water quality suffers. It’s a relatively small investment that prevents much bigger problems down the road.
Here are 10 pre filters that deliver on performance, from full RO systems to simple pitchers and faucet attachments.
The iSpring RCC7AK under-sink filter eliminates up to 99% of harmful contaminants using a reverse osmosis filtration system. It fits any standard kitchen sink and comes with a 1-year money-back guarantee plus lifetime technical support.
Quick Comparison Chart
| # | Water Pre Filter | Our Rating | ||
|---|---|---|---|---|
| 1 |  |
iSpring Under-Sink Filter | ★★★★★ | Check Price |
| 2 |  |
APEX Counter-Top Filter | ★★★★★ | Check Price |
| 3 |  |
BRITA Faucet Attachment | ★★★★☆ | Check Price |
| 4 |  |
PUR Lead Reducing Pitcher | ★★★★☆ | Check Price |
| 5 |  |
BRITA Compact Dispenser | ★★★★☆ | Check Price |
| 6 |  |
PUR Classic Dispenser | ★★★★☆ | Check Price |
| 7 |  |
APEC Under-Sink Filter | ★★★★☆ | Check Price |
| 8 |  |
BRITA Large Water Pitcher | ★★★★ | Check Price |
| 9 |  |
BRITA Stream Rapids Pitcher | ★★★★ | Check Price |
| 10 |  |
Artesian RO System | ★★★★ | Check Price |
1. iSpring Under-Sink Filter — Best Overall
iSpring RCC7AK Under-Sink Filter
The iSpring under-sink filter eliminates up to 99% of harmful contaminants using a reverse osmosis filtration system. It fits any standard kitchen sink and includes a clear tube for visual monitoring.
Pros
- Removes up to 99% of contaminants with reverse osmosis
- DIY installation with no plumber needed
- Clear tube lets you see when filter needs changing
- 1-year money-back guarantee and lifetime support
Cons
- Takes up space under the kitchen sink
- Reverse osmosis produces some wastewater
- Filter replacements add to ongoing costs
Let’s start with an under-sink filter. This filter eliminates up to 99% of harmful contaminants that appear in municipal and well water.
It also uses reverse osmosis-based filtration system, which makes it very effective in removing impurities and contaminants. This under-sink filter is a water softener too.
The product has a clear tube where you can visually see the water is filtered and the residue left behind. This will help in letting you know when to have a filter change.
The under-sink filter fits in any standard kitchen sink. Therefore, you don’t have to worry about making adjustments to your kitchen sink.
Its installation is easy. A do-it-yourself kind of installation with written down instructions will save you the cost of having a plumber fix it for you.
Besides, there are online videos to help in the event you need more help.
The product comes backed by a 1-year money-back guarantee, a 1-year manufacturer warranty, and lifetime technical support from iSpring based in Alpharetta, Georgia. If you’re looking at a complete setup, pair this with a sediment water filter as a first stage. All water-contacting parts are manufactured to comply with NSF/ANSI standard 58 for reverse osmosis.
2. APEX Counter-Top Filter — Best Countertop
APEX Counter-Top Alkaline Filter
The APEX alkaline countertop filter removes Cryptosporidium and Giardia cysts along with standard contaminants. It sits conveniently on your kitchen counter with a transparent housing for easy monitoring.
Pros
- Removes Cryptosporidium and Giardia cysts
- Simple countertop installation with no modifications
- NSF and FDA certified for safety
- Transparent housing for visual monitoring
Cons
- Takes up counter space
- Filter capacity limited to 750 gallons
- Not suitable for well water without pre-treatment
This is another one of the most excellent water filter products on the market. The APEX alkaline water filter has ensured all safety procedures and standards have been met at the time of manufacture, leaving you with less to worry about water purity.
It also filters out contaminants, and this one is special because it removes Cryptosporidium, and Giardia cysts, which contribute to water-borne illnesses. For more on countertop options, see our countertop water filter reviews. It’s a transparent countertop water filter system that enables you to know when to change the filters.
The countertop filter has been designed in a way to sit conveniently on your kitchen countertop without making any adjustments to your counter. With this water filter, there’s no need to buy filtered water.
This water filter from APEX can also remove sediment and rust. The filter of this product can filter up to 750 gallons of drinking water before replacing the filter.
Since owning this filter spares you from purchasing countless bottled water products, it makes sure you’re an environmentally friendly individual. That counts as a bonus point for you.
The Alkaline filter is very appealing and provides your kitchen counter with that desired aesthetic look. This is also another Do-It-Yourself kind of product with written instructions to aid you in the installation process.
Proudly made in the USA, APEX makes all of its products according to the National Safety Foundation certified water filter safety standards. By following the strict guidelines of the NSF and the FDA, they have ensured that the water your family drinks is completely safe and healthy.
3. BRITA Faucet Attachment — Best Faucet Mount
BRITA Faucet Attachment Filter
The BRITA faucet filter attaches directly to your standard faucet and removes up to 99% of lead, chlorine, benzene, and asbestos. Each filter replaces up to 750 standard plastic water bottles.
Pros
- Removes 99% of lead, chlorine, benzene, and asbestos
- Easy tool-free installation on standard faucets
- Built-in indicator shows when to replace filter
- Replaces up to 750 plastic water bottles
Cons
- Doesn't fit pull-out or spray-style faucets
- Filter needs replacement every 4 months
- Flow rate slightly reduced compared to unfiltered
The BRITA faucet filter attaches directly to your standard faucet with no tools required. It filters out up to 99% of lead, chlorine (including smell), benzene, and asbestos.
A built-in indicator tells you exactly when the filter is due for replacement. For an average family, each filter cartridge lasts up to 4 months, which reduces your ongoing costs significantly.
Reduce waste and save is another excellent feature of this incredible product. 1 Brita faucet filter can provide up to 100 gallons of filtered tap water, replacing up to 750 standard 16 oz. plastic water bottles. Since it saves so much on plastic water bottles, this filter is environmentally friendly too.
It’s an appealing water filter that matches with most home kitchens and adds that spark to your decor.
Keep in mind that this filter doesn’t fit pull-out or spray-style faucets. With the manufacturer’s objective as safe cleaning and drinking water, one is assured of quality and safety in the purchase of this product.
4. PUR Lead Reducing Pitcher — Best Pitcher
PUR Lead Reducing Pitcher
The PUR pitcher uses carbon and ion exchange to remove up to 70 water impurities including 99% of lead. It features a built-in electric indicator light and comfortable ergonomic handle.
Pros
- Removes 99% of lead and 70 other impurities
- Built-in electric indicator for filter replacement
- Portable design that fits in the refrigerator
- WQA certified for water quality standards
Cons
- Takes about 30 minutes to fully filter
- 40-gallon capacity requires frequent refills
- Smaller capacity compared to dispenser models
The PUR pitcher has been on the market for over 30 years, so you can trust its quality and reliability. It uses carbon and ion exchange to remove up to 70 water impurities from your drinking water.
The built-in electric indicator light tells you when the filter is due for replacement. No more guessing or trying to remember when you last changed it.
This pitcher’s filter is WQA certified and removes 99% of lead. It provides 40 gallons of filtered water per filter, which saves you from purchasing bottled water.
This filter is portable, making it possible for one to refrigerate and have cold drinking water. This jug-like pitcher uses carbon and ion exchange, which effectively removes up to 70 water impurities, which are quite the feature for a pitcher.
Last but not least, these pitchers come in such attractive designs and colors. You can choose the one of your taste and liking.
Though it takes about 30 minutes to fully filter a batch of water, the 99% lead reduction makes the wait worthwhile. PUR continues to use innovative technologies for continuous improvement across their product line.
5. BRITA Compact Dispenser — Best Dispenser
BRITA Compact Dispenser
The BRITA compact dispenser features a slim design that fits on countertops and refrigerator shelves. It reduces up to 99% of lead, chlorine, asbestos, cadmium, and mercury with filters lasting up to 6 months.
Pros
- Filters last up to 6 months, 3x longer than competitors
- Slim design fits on countertops and fridge shelves
- Spigot makes pouring easy and mess-free
- Saves up to 900 standard plastic water bottles
Cons
- Higher initial cost than basic pitchers
- Larger footprint than standard pitcher models
- Electric indicator requires battery replacement
The BRITA compact dispenser lives up to its name with a modern slim design that fits easily on countertops and refrigerator shelves. It reduces up to 99% of lead, chlorine, asbestos, cadmium, and mercury.
What sets this dispenser apart is the filter longevity. Each filter lasts up to 6 months, which is three times longer than the average PUR lead reduction filter.
That translates to less maintenance and lower long-term costs.
An electric indicator flashes when it’s time to replace the filter. The spigot makes it easy to pour water into a glass or container without lifting the entire unit.
Filling the dispenser is just as convenient thanks to the flip-top lid. This product has received some pretty good reviews from other customers so that you can trust its quality.
With its sleek design, you can use this water filter anywhere. In the office, at home, gyms.
Each dispenser saves up to 900 standard 16-ounce water bottles. The sleek design adds a premium touch to whatever space you place it in.
6. PUR Classic Dispenser — Best Large Capacity
PUR Classic Dispenser
The PUR Classic dispenser holds 18 cups and uses MAXION technology that blends carbon and ion exchange to reduce 95% of mercury and 96% of trace pharmaceuticals while leaving beneficial fluoride intact.
Pros
- Large 18-cup capacity serves entire households
- MAXION technology maximizes contaminant reduction
- Tap spout makes dispensing convenient and clean
- Deep narrow design stores easily anywhere
Cons
- Filters need replacement every 2 months
- Plastic construction feels less premium
- Heavier when full due to large capacity
The PUR Classic dispenser is built for large households with its generous 18-cup capacity. It uses MAXION technology, which blends carbon and ion exchange to maximize contaminant reduction.
This dispenser reduces 95% of mercury and 96% of trace pharmaceuticals, yet it still leaves beneficial fluoride in your water. It even filters as water is poured out, which is a standout feature not found in most competitors.
The deep and narrow design makes it easy to store anywhere, including inside your refrigerator. A handle makes carrying and refilling convenient.
The tap spout eliminates the mess that comes with pouring from a traditional pitcher. This is especially useful in office environments where spills are a concern.
Filters last approximately 2 months before replacement. The product includes a 1-year warranty from PUR, giving you confidence in the quality of your purchase.
7. APEC Under-Sink Filter — Best Premium
APEC ROES-50 Under-Sink RO Filter
The APEC under-sink RO filter uses a superior filtration system that eliminates up to 99% of contaminants including heavy metals, bacteria, and viruses. It comes with a 100% lead-free designer faucet.
Pros
- Removes 99% of contaminants including bacteria and viruses
- Includes 100% lead-free designer faucet
- Noise-free and trouble-free operation
- Leak-free fittings require no extra lock clips
Cons
- Higher price point than basic filters
- Takes up significant under-sink space
- Professional installation recommended for beginners
The APEC under-sink filter delivers a superior filtration system that removes up to 99% of contaminants. This includes heavy metals, bacteria, and viruses, covering virtually every threat to your water quality.
Designed, engineered, tested, and assembled in the USA, this system has been performing reliably for over 20 years. The noise-free, trouble-free operation means you can install it and forget about it.
It comes with a 100% lead-free designer faucet plus FDA-certified JG food-grade tubing. The leak-free fittings require no extra lock clips, simplifying installation considerably.
The reverse osmosis system is WQA certified, guaranteeing quality filtration. A 2-year warranty provides additional peace of mind.
Beyond removing contaminants, this filter noticeably improves water taste. Many users report it produces water that tastes better than bottled water.
8. BRITA Large Water Pitcher — Best Family
BRITA Everyday Large Water Pitcher
The BRITA large pitcher is ideal for families with its generous capacity that serves 20 gallons over 2 months. It removes chlorine taste and odor along with copper, cadmium, and mercury impurities.
Pros
- Large capacity ideal for families
- Removes chlorine, copper, cadmium, and mercury
- Easy refilling with flip-top lid design
- Space-efficient design fits in refrigerator
Cons
- Filter lasts only 2 months at 20 gallons
- Doesn't remove dissolved solids or lead
- Plastic construction may discolor over time
The BRITA large pitcher is an ideal water filter for home use and larger families. The clear plastic design makes it easy to see water levels and know when to refill.
Top of this pitcher’s filter is its removal of chlorine taste and odor, copper, cadmium, and mercury impurities. Who would have thought that what looks like a small jug could have such features?
Each filter provides up to 20 gallons of filtered water over a 2-month period. The flip-top lid makes refilling quick and easy without removing the cover entirely.
Also, it’s a space-efficient water filter pitcher. The beauty of this product is that it does so many things for you besides purifying your water.
In the case installing an under-sink maybe appear too complicated for you, this pitcher sorts you out as its capacity can serve your family.
At its price point, this pitcher delivers excellent value for the filtration it provides. It comes in attractive designs especially made for household use.
9. BRITA Stream Rapids Pitcher — Best Fast Filter
BRITA Stream Rapids 10-Cup Pitcher
The BRITA Stream Rapids pitcher features an innovative filter near the spout that filters water as you pour. This eliminates the waiting time for water to seep through traditional gravity filters.
Pros
- Filters water as you pour with no waiting time
- LED indicator shows when to replace the filter
- Sleek design complements any kitchen or office
- Saves up to 300 standard plastic water bottles
Cons
- Smaller 10-cup capacity than standard pitchers
- Filter replacement needed every 2 months
- Filtration less thorough than traditional gravity filters
The BRITA Stream Rapids pitcher introduces an innovative approach to water filtration. The filter is positioned near the spout, so water gets filtered as you pour it into your glass.
This design eliminates the waiting time that comes with traditional gravity-fed pitchers. You get clean, filtered water instantly without planning ahead.
The filter needs replacement after 2 months of use, which is standard for pitchers in this category. An LED indicator helps you track when it’s time for a new filter.
The sleek design complements any kitchen, living room, or office space. It’s space-efficient and fits comfortably inside your refrigerator for cold filtered water on demand.
Each pitcher saves up to 300 standard 16-ounce plastic water bottles. This saves money and reduces your household plastic waste at the same time.
10. Artesian RO System — Best Remineralization
Artesian Under-Sink RO System
The Artesian 7-stage reverse osmosis system not only removes 98% of contaminants but adds beneficial minerals like calcium and magnesium back into the water. It balances pH at two different points to prevent tank degradation.
Pros
- Adds calcium and magnesium minerals to purified water
- Dual pH balancing prevents storage tank degradation
- Easy filter replacement without a wrench
- 5-year manufacturer warranty included
Cons
- Higher price point than basic RO systems
- Complex 7-stage system takes more space
- Filter replacement every 2000 gallons or annually
The Artesian system closes out our list with an impressive 7-stage reverse osmosis process. What makes it unique is that it removes 98% of contaminants while adding beneficial minerals like calcium and magnesium back into the water.
Most reverse osmosis systems produce demineralized water that’s highly pure but slightly acidic. When acidic water sits in the storage tank, it can eat up the rubber bladder.
The Artesian prevents this by balancing the water’s pH level at two different points in the purification process.
The first remineralization occurs when water travels to the storage tank. The second occurs when water flows to the faucet.
This dual approach prevents storage tank degradation and produces alkaline water that tastes great.
Filter replacement is easy and doesn’t require a wrench. Each filter lasts approximately 2,000 gallons or one year, whichever comes first.
Though it’s an expensive product, its many features make it worth the price. This artesian under-sink filter system comes with a 5-year warranty from the manufacturer.
This system also doesn’t have the common problems most traditional under-sink water filter systems have, such as canister filter housing leaks, slow flow rate, high water waste, service challenges, and slightly acidic water.
How We Evaluated
Every water pre filter on this list was evaluated using a consistent set of criteria to make sure there’s a fair comparison:
- Filtration performance: How effectively does the filter remove contaminants, sediment, and impurities from water?
- Filter lifespan: How long does each filter last before replacement is needed, and what is the gallon capacity?
- Ease of installation: Can the average homeowner install it without professional help?
- Build quality: Is the construction durable and built to last through regular use?
- Value for money: Does the performance justify the price, including ongoing filter replacement costs?
- Certifications: Does the product hold NSF, WQA, or FDA certifications for safety and performance?
Frequently Asked Questions
It catches sediment, rust, iron, and other particles before they reach your main filter or appliances. Think of it as a bodyguard for your downstream equipment — it takes the hit so your primary filter lasts longer and works better.
Every 3 to 6 months for most pre filters, depending on how dirty your water is and how much you use. RO membranes can stretch to 2 years. Your manufacturer's schedule will give you the exact timing, but keep an eye on flow rate too — if it drops, the filter's probably due.
Definitely. If your water tastes like a swimming pool or has a funky smell, a pre filter with activated carbon or RO technology will make a noticeable difference. Most people are surprised at how much better their water tastes once they install one.
It can actually be a smart add-on. The pre filter catches the big stuff — sediment, rust, large particles — before it hits your main system. That means your primary filter lasts longer and you spend less on replacements over time.
Final Thoughts
A pre filter is one of those investments that quietly saves you money by protecting everything downstream — your main filter, your appliances, your plumbing.
For the best overall performance, the iSpring under-sink system removes 99% of contaminants and comes with lifetime tech support. If you want something simpler, the BRITA faucet attachment is effective and installs without tools.
The most important thing is picking a certified product and actually replacing the filter on schedule. A clogged pre filter defeats the whole purpose.
A quality water pre filter is one of the most cost-effective investments you can make for your home's water quality. Whether you choose an under-sink reverse osmosis system or a simple countertop pitcher, the key is choosing a certified product and replacing the filter on schedule.
