You turn on the tap, fill a glass, and drink. It looks clean, but invisible contaminants like lead, chlorine, and PFAS might be lurking inside. A countertop water filter is the easiest way to upgrade your hydration without hiring a plumber.
These units sit right next to your sink or inside your fridge, turning questionable tap water into something crisp and safe. They are affordable, portable, and require zero renovation skills.
In this guide, we break down exactly what to look for in a filtration system. Then, we dive into our top 10 picks for 2026, ranked by contaminant removal, taste, and ease of use.
- High pH alkaline filter system
- Includes standard connectors
- Filters last about 12 months
- NSF and FDA approved
- Connects to standard faucets
- BPA-free and lead-free
- Large 10,000 gallon capacity
- Five-stage filter
- Activated carbon filter
- Meets NSF/ANSI standards
- Transparent case
- Casing is available in 5 colors
- Advanced multi-stage granular filter
- Online video tutorial
- Replaceable filters last 3 months
- Large 1.13 gallon capacity
- Removes 99% of lead
- Electronic replacement indicator
- Holds 2.25 gallons of water
- Purifies up to 6,000 gallons of water
- Sleek metallic design
- Five-stage KDF-55 filter
- Meets NSF standards
- 30-day money-back guarantee
How to Choose a Countertop Water Filter
Finding the right filter isn’t just about picking the one that looks cool. You need a system that tackles your specific water issues and fits your lifestyle. Here is the essential criteria to consider before you buy.
Countertop filters generally fall into two camps: faucet-attached units or standalone reservoirs. Both serve the same purpose but work differently in your kitchen flow.
They remove the nasty stuff, but their biggest selling point is convenience. You get filtered water on demand, without the hassle of under-sink installation.
System Type
“Countertop” describes the location, but the delivery method varies. Knowing the difference helps you pick the right fit for your counter space:
- Faucet-Attached: These divert water directly from your tap through a filter sitting next to the sink. They provide continuous filtered water instantly. The downside is that they require a hose connection to your faucet’s aerator, which can look a bit cluttered.
- Gravity-Fed / Pitcher: These are standalone units. You pour water into a top reservoir, and gravity pushes it through the filters into a bottom chamber. They are portable and require no plumbing, but they are slower and require manual refilling.
Consider your available space. Faucet filters need proximity to the sink, while gravity filters can live anywhere in the house or even go camping with you.
Build Materials
Plastic is the standard for affordability and weight. If you go this route, BPA-free construction is non-negotiable. BPA (Bisphenol A) is an industrial chemical used in plastics that can seep into water, mimicking hormones and causing health issues.
Stainless steel is the premium alternative. It is durable, easier to sanitize, and looks much better in modern kitchens. It also avoids the risk of plastic leaching entirely.
Health Alert
If sustainability is your goal, look for brands that use recycled materials or offer recycling programs for their used filter cartridges.
Filter Capacity
Capacity determines how often you need to buy replacements. A small pitcher might need a new filter every 40 gallons (about two months), while a robust countertop unit can last for 500 to 1,000 gallons.
Higher capacity units cost more upfront but usually have a lower cost-per-gallon over time. If you have a family of four, avoid small pitchers unless you enjoy refilling them ten times a day.
Installation and Setup
Most countertop filters are DIY-friendly. Faucet-mounted systems usually screw onto the end of your standard faucet (you might need to remove your current aerator).
Gravity filters and pitchers are “plug-and-play” (or rather, pour-and-play). However, be aware that some filters require priming (soaking or flushing) before first use to activate the media.
Replacement Availability
A filter housing is useless without fresh cartridges. Before purchasing, check the availability and price of replacement filters.
Proprietary filters can be expensive and hard to find. Some systems use standard 10-inch housing, allowing you to buy generic or upgraded filters from third-party brands. This flexibility can save you money and headaches later.
Warranty Coverage
A solid warranty protects you against leaks and cracks. Look for at least a one-year warranty on the housing unit.
Customer support is equally important. Water quality varies by location, and having access to a support team that can help you troubleshoot flow issues or fitment problems is invaluable.
Contaminant Removal
Not all filters catch the same bugs. You need to know what is in your water to choose the right weapon.
- Activated Carbon: Best for chlorine, taste, odor, and some volatile organic compounds (VOCs).
- Reverse Osmosis (RO): The gold standard. Removes dissolved solids, arsenic, fluoride, and heavy metals.
- Activated Alumina: Specifically targets fluoride and arsenic.
Check if the filter is NSF/ANSI certified. This third-party testing proves the filter actually removes what the marketing claims it removes.
Taste and Odor
Taste is subjective, but it matters. Carbon filters are excellent at polishing water, removing that “swimming pool” chlorine smell and taste.
However, Reverse Osmosis systems remove minerals, which some people find makes the water taste “flat.” If you prefer mineral-rich water, look for a system with a remineralization stage (alkaline filter) to add calcium and magnesium back in.
Aesthetics
Since this device lives on your counter, it shouldn’t be an eyesore. Stainless steel gravity filters look industrial and sleek, while clear housings allow you to see the filtration working (and know when it’s dirty).
Consider the footprint. If you have limited counter space, a tall, slender model is better than a wide, bulky one.
Product Reviews
We analyzed filtration certifications, flow rates, and user feedback to find the units that actually deliver clean water. Whether you need a heavy-duty reverse osmosis system or a sleek pitcher for the fridge, here are the top performers available right now.
APEC Portable Countertop Water Filter
Best Compatibility
Most countertop units rely on simple carbon filters, but the APEC takes it a step further with Reverse Osmosis (RO) technology. This means it removes significantly more contaminants, including dissolved solids that standard filters miss. It is essentially a portable powerhouse.
The unit is encased in a protective shell, making it perfect for apartments, RVs, or student housing where you can’t drill holes for a permanent system. You hook it up to your faucet, fill your container, and disconnect it when you are done.
What We Like
Quiet Operation
Despite being a robust system, the APEC runs smoothly without the loud vibrating or hissing common in some electric pumps. It produces a low hum that won’t disturb the household.
True Portability
This system is designed for movement. Whether you are switching apartments or taking a road trip in a camper, the compact case protects the components. It connects and disconnects in seconds.
Universal Connections
Installation is tool-free. It uses high-quality John Guest quick-connect fittings and comes with standard faucet adapters. If you can screw a cap on a bottle, you can install this.
Certified Support
APEC backs their product with lifetime technical support from WQA-Certified Water Specialists. If you run into flow issues or taste problems, you are talking to an expert, not a generic call center.
99% Contaminant Removal
Because it uses Reverse Osmosis, this filter tackles the hard stuff: arsenic, chromium, fluoride, lead, and copper. It offers under-sink purity levels in a countertop package.
What We Don't Like
Slower Flow Rate
Reverse Osmosis is a slow process by design. It forces water through a semi-permeable membrane, which takes time. You should fill a pitcher or jug in advance rather than trying to fill a glass on demand.
Product Specs
| Filtration System | Reverse osmosis |
| Weight | 10 pounds |
| Filter Lifetime | Not specified |
| Contaminants | Lead, fluoride, arsenic, copper, barium, cadmium, radium |
| Improves Water Quality | Better taste and odor |
Our Ratings
pH Regenerate Faucet Water Filter
Best Modern Design
The pH Regenerate isn’t just about taking bad stuff out; it is about putting good stuff back in. This unit focuses on alkaline filtration, which remineralizes water to improve pH balance and taste.
Visually, it is a winner. The stainless steel housing looks high-end and avoids the cheap plastic aesthetic of many competitors. It connects directly to the faucet and includes a diverter switch, letting you toggle between tap water for dishes and filtered water for drinking.
What We Like
Multi-Use Capability
While it shines in the kitchen, the standard connectors mean you can also install it in a bathroom for cleaner face-washing water. The diverter switch is sturdy and easy to grip.
Tackles Hard Water Issues
In hard water areas, mineral buildup can ruin appliances. While water softeners are the heavy lifters for the whole house, this filter helps reduce scale and removes heavy metals like lead and iron right at the tap.
High Capacity Filters
Depending on your usage, the PH007 filter inside can last up to 12 months. This is double the lifespan of many standard carbon blocks, reducing your annual maintenance costs.
Enhanced Hydration
By removing chlorine and adding minerals like zinc and magnesium, the water tastes smoother and sweeter. This improved taste profile often encourages people to drink more water throughout the day.
What We Don't Like
Residual Drips
Due to the pressure in the unit, the spout may drip for a few seconds after you turn the faucet off. Ensure the spout is always positioned over the sink basin to avoid wet counters.
Product Specs
| Filtration System | Alkaline ionized |
| Weight | 4.5 pounds |
| Filter Lifetime | Up to 12 months |
| Contaminants | Metals, minerals |
| Improves Water Quality | Better taste, odor, remineralizes |
Our Ratings
Apex Countertop Alkaline Filter
Best Warranty
The Apex MR-1050 is a transparent countertop workhorse. The clear housing lets you see exactly when the filter cartridge is getting dirty, eliminating the guesswork of maintenance.
It focuses on alkaline balance, adding calcium, magnesium, and potassium back into the water. This is a great choice for people who want the purity of filtered water but dislike the acidic taste that sometimes comes with it.
Manufactured in the USA, it adheres to strict quality controls and uses NSF-certified media.
What We Like
Universal Faucet Fit
This unit comes with a variety of adapters, making it compatible with almost any standard kitchen faucet. It even works with some pull-down faucets that typically struggle with diverter valves.
Sediment Fighter
The filter layers are visible, and you can see them working. It effectively traps sediment, which protects your other appliances if you use the filtered water for coffee makers or kettles. It also targets cysts like Giardia and Cryptosporidium.
Healthier Mineral Profile
Alkaline water is prized for its taste and potential health benefits. By reintroducing essential minerals, the Apex reduces acidity and helps you meet your daily mineral intake simply by staying hydrated.
Trusted Manufacturing
Because it is made in the US, you don’t have to worry about questionable materials. The components are lead-free and BPA-free, adhering to FDA and NSF safety guidelines.
What We Don't Like
Distinct Taste
If you are used to zero-mineral water, the alkaline taste might feel different at first. It is generally described as “softer” or “sweeter,” but some users detect a slight mineral aftertaste.
Product Specs
| Filtration System | Clear alkaline |
| Weight | 5 pounds |
| Filter Lifetime | Not specified |
| Contaminants | Metals, sediments,cryptosporidium, giardia cysts |
| Improves Water Quality | Better taste, odor, remineralizes |
Our Ratings
CleanWater4Less Countertop Water Filtration
Best Capacity
If you hate changing filters, the CleanWater4Less is your best friend. It boasts a massive 10,000-gallon capacity, meaning you can install it and forget about it for years (depending on usage).
It connects via a diverter valve to your existing faucet and sits neatly on the counter. The primary selling point here is flow rate; it delivers filtered water much faster than RO systems or gravity filters, hitting roughly 1 gallon per minute.
What We Like
Set It and Forget It
The 10,000-gallon rating is huge. For a small household, this could theoretically last years. It is the most low-maintenance option on our list.
Five-Stage Cleaning
It packs a lot into a sealed unit. A sediment pre-filter grabs the dirt and rust. Then, water flows through activated carbon and a micron filter to tackle chlorine, hydrogen sulfide, and VOCs.
Tool-Free Setup
You can have this running in under five minutes. Unscrew your aerator, screw on the diverter valve, and you are done. No wrenches or Teflon tape required.
What We Don't Like
Disposable Unit
The downside of a sealed system is that you cannot change the cartridge. Once the 10,000 gallons are up (or the filter gets clogged), you have to replace the entire unit. It is less eco-friendly than systems with replaceable cartridges.
Product Specs
| Filtration System | Granulated active carbon |
| Weight | 3.35 pounds |
| Filter Lifetime | 10,000 gallons |
| Contaminants | Chemical, organic chemicals |
| Improves Water Quality | Better taste, odor |
Our Ratings
Aquagear Water Filter Pitcher
Best Countertop Pitcher
Not everyone wants hoses attached to their sink. The Aquagear pitcher offers high-level filtration in a portable format. You can keep it on the counter or slide it into the fridge door.
Unlike standard pitchers that only improve taste, Aquagear is rigorous. It targets lead, fluoride, and PFOA/PFOS (forever chemicals). It is built for renters, students, or anyone who wants clean water without permanent fixtures.
What We Like
Impressive Filter Life
Most pitcher filters die after 40 gallons. The Aquagear filter lasts for 150 gallons. That is three times the lifespan of leading competitors, meaning fewer filter changes and less waste.
Serious Contaminant Removal
This isn’t just for taste. It is tested to remove 99.9% of lead and significantly reduce fluoride, mercury, and chloramines. It brings heavy-duty filtration to a simple pitcher format.
Lifetime Guarantee
Pitchers can crack if dropped, but Aquagear offers a lifetime guarantee. If the pitcher breaks or the lid snaps, they replace it. That is a level of support rarely seen in this category.
What We Don't Like
Patience Required
Gravity takes time. Because the filter is so dense (to catch all those contaminants), the water drips through slowly. Refill it immediately after pouring a glass so it is ready for the next time.
Product Specs
| Filtration System | Not specified |
| Weight | 2.2 pounds |
| Filter Lifetime | 450 gallons |
| Contaminants | Chlorine, mercury, lead, fluoride |
| Improves Water Quality | Removes harmful contaminants but leaves essential minerals |
Our Ratings
iSpring Countertop Water Filter
Best Colorful Design
The iSpring CKC1C proves that water filters don’t have to be boring white boxes. Available in clear or various translucent colors, it adds a bit of pop to the kitchen while letting you monitor filter condition.
It uses a standard 10-inch carbon block filter, which is excellent for removing chlorine, odors, and VOCs. Because it uses a standard size, you aren’t locked into proprietary replacement filters, you can shop around for compatible 10-inch cartridges from various brands.
What We Like
Effective Carbon Block
The included filter is a 5-micron carbon block. It removes 95% of chlorine, rust, sand, and sediment. It also handles herbicides and industrial chemicals, making your water safer and better tasting.
See-Through Maintenance
The transparent housing is a huge functional advantage. You can physically see the sediment building up on the white filter cartridge. When it turns dark brown or gray, you know exactly when it is time to swap it out.
Standard Sizing
The 2.5″ x 10″ cartridge housing is the industry standard. This gives you the freedom to upgrade the filter later if you want to switch to a different type of carbon or a specialized lead filter.
What We Don't Like
No Flow Restrictor
This unit flows fast, sometimes too fast. It doesn’t have a built-in restrictor, so if you turn your faucet on full blast, the water might rush through the filter too quickly to be fully effective. You will need to manually adjust your tap to a moderate flow.
Product Specs
| Filtration System | CTO carbon block |
| Weight | 4 pounds |
| Filter Lifetime | Six months |
| Contaminants | Sand, rust, odors, chemicals, VOCs |
| Improves Water Quality | Balanced pH water, removes odors |
Our Ratings
Home Master Jr. F2 Sinktop Water Filtration System
Best Compact Filter
The Home Master Jr. F2 is small but mighty. It is designed specifically for tight spaces where a bulky canister would get in the way. Despite the small footprint, it packs a serious punch against fluoride.
It utilizes a 3-stage filter that combines activated alumina (for fluoride/arsenic) with coconut shell carbon (for chemicals/taste). It creates a “channeling prevention” system to ensure water passes through the media evenly rather than finding a shortcut.
What We Like
Advanced Fluoride Removal
Many basic carbon filters ignore fluoride. The activated alumina stage in this unit specifically targets it, making it a great choice for areas with heavily fluoridated municipal water.
Superior Carbon Media
It uses coconut shell carbon, which is widely considered superior to standard coal-based carbon for taste improvement. It creates a sweeter, fresher water profile.
Space Saver
It takes up very little real estate next to the sink. The white housing is unobtrusive and easy to wipe clean.
What We Don't Like
Stiff Opening
The housing can be sealed very tightly. Some users report needing significant hand strength or a strap wrench to unscrew the cap when it is time to change the filter.
Product Specs
| Filtration System | Advanced multi-stage granular filter |
| Weight | 4.25 pounds |
| Filter Lifetime | Three months or 500 gallons |
| Contaminants | Chlorine, sediments, fluoride, pesticides, herbicides, VOCs and TOCs |
| Improves Water Quality | Removes odors and tastes |
Our Ratings
Brita Extra Large Water Dispenser
Best Filtered Water Dispenser
The Brita Ultramax is a classic for a reason. It is an 18-cup dispenser that fits perfectly on deep refrigerator shelves, giving you ice-cold filtered water on tap.
It uses Brita’s “Elite” (formerly Longlast) filters, which are certified to remove 99% of lead, a major upgrade from the standard white Brita filters. It is the go-to choice for busy families who want a simple, affordable solution that works.
What We Like
Family-Sized Capacity
With a 1.13-gallon capacity, you aren’t running to the sink to refill it after every glass. It holds enough for a family dinner or a day’s worth of hydration for a couple.
Long-Lasting Filter
The Elite filter lasts for roughly six months (120 gallons). This is three times longer than standard filters, meaning less hassle and lower long-term costs. The electronic sticker on top reminds you when time is up.
Fridge-Friendly Shape
The rectangular “tank” design is efficient. It slides right to the back of the fridge shelf, unlike round pitchers that waste space.
What We Don't Like
Top Heavy Refills
The upper reservoir (where you pour tap water) is smaller than the bottom tank. You have to fill it, wait for it to filter down, and then fill it again to get the dispenser to maximum capacity.
Product Specs
| Filtration System | Active filter |
| Weight | Not specified |
| Filter Lifetime | Six months |
| Contaminants | Chlorine, lead, mercury, benzene |
| Improves Water Quality | Removes odors and tastes |
Our Ratings
Big Berkey Countertop Water Filter
Best Look
The Big Berkey is iconic in the world of gravity filtration. With its polished stainless steel chambers, it looks great on a countertop and requires zero electricity or plumbing.
It is a gravity-fed system: you pour water into the top, and it slowly trickles through the black purification elements into the bottom storage tank. It is a favorite for emergency preppers because it can filter untreated water sources, but it works just as well for everyday tap water.
What We Like
Emergency Ready
Because it doesn’t need water pressure or power, this is the ultimate backup during a storm or power outage. You can rely on it when the grid goes down.
High Volume
The 2.25-gallon capacity is substantial. It is perfect for medium-sized families (2-4 people). The stainless steel spigot is durable and easy to use for kids.
Long-Term Value
The filters are expensive upfront but last a very long time, up to 6,000 gallons per pair. You might go years without needing to buy replacements, which helps justify the initial price tag.
What We Don't Like
Maintenance Required
Gravity filters need love. You have to scrub the filters occasionally to keep flow rates up, and you need to perform a “red dye test” periodically to ensure the filters are sealed correctly and working properly.
Product Specs
| Filtration System | Purification elements, fluoride filters |
| Weight | 8.2 pounds |
| Filter Lifetime | 3.000 gallons |
| Contaminants | Chlorine, arsenic, heavy metal ions |
| Improves Water Quality | Yes |
Our Ratings
AEX EXPRT Dual Countertop Water Filter
Best Dual Filter
Why settle for one filter when you can have two? The APEX EXPRT uses a dual-cartridge system to broaden the spectrum of contaminant removal.
One cartridge focuses on heavy sediment and KDF-55 media for heavy metals and bacteria control. The second cartridge handles the fine chemical filtration and taste improvement. It sits wider on the counter but delivers a thorough clean.
What We Like
Comprehensive Filtration
By splitting the job across two cartridges, the media doesn’t get overwhelmed as quickly. It effectively targets chloramine, heavy metals, and microorganisms while adding beneficial minerals like potassium and magnesium.
American Made Quality
Like other Apex products, this is assembled in the USA with NSF-compliant materials. The clear housing gives you a visual check on both stages of filtration.
Satisfaction Guaranteed
It comes with a 30-day money-back guarantee. If the water taste doesn’t suit you, or if it doesn’t fit your faucet, you have an easy out.
What We Don't Like
Counter Space
This is a double-wide unit. If you have a very small kitchenette or a cluttered sink area, the footprint might be too large. Measure your space before ordering.
Product Specs
| Filtration System | KDF-55, GAC, Alkaline |
| Weight | 9.25 pounds |
| Filter Lifetime | Not specified |
| Contaminants | Chemicals, bacteria, heavy metals |
| Improves Water Quality | Adds essential minerals |
Our Ratings
| Product | Best | Filtration System | Weight | Filter Lifetime | Contaminants |
| APEC Portable Filter | Compatibility | Reverse osmosis | 10 lbs | Not specified | Lead, fluoride, arsenic, copper, barium, cadmium, radium |
| pH Regenerate Faucet Filter | Modern Design | Alkaline ionized | 4.5 lbs | Up – 12 months | Metals, minerals |
| Apex Countertop Filter | Warranty | Clear alkaline | 5 lbs | Not specified | Metals, sediments,cryptosporidium, giardia cysts |
| CleanWater4Less Filtration | Capacity | Granulated active carbon | 3.35 lbs | 10,000 gal. | Chemical, organic chemicals |
| Aquagear Filter | Countertop Pitcher | Not specified | 2.2 lbs | 450 gal. | Chlorine, mercury, lead, fluoride |
| iSpring Filter | Colorful Design | CTO carbon block | 4 lbs | Six months | Sand, rust, odors, chemicals, VOCs |
| Home Master Jr. F2 | Compact Filter | Advanced multi-stage granular filter | 4.25 lbs | Three months | Chlorine, sediments, fluoride, pesticides, herbicides, VOCs and TOCs |
| Brita Extra Large Dispenser | Filtered Water Dispenser | Active filter | Not specified | Six months | Chlorine, lead, mercury, benzene |
| Big Berkey Filter | Looking | Purification elements, fluoride filters | 8.2 lbs | 6.000 gal. | Chlorine, arsenic, heavy metal ions |
| AEX EXPRT Dual Filter | Dual Filter | KDF-55, GAC, Alkaline | 9.25 lbs | Not specified | Chemicals, bacteria, heavy metals |
FAQs
How Will I Know if the Filter Stops Working?
The most obvious sign is a change in flow rate. As filters trap contaminants, they get clogged, and water flow drops significantly. You might also notice the return of bad tastes or odors (like chlorine).
Some modern pitchers have electronic timers, but these are based on time, not actual water quality. Visual inspection works for clear units; if the filter looks dark brown or slimy, it is time for a change (2).
Which Filter Is Best for Microbe Removal?
If your water source is unsafe (like a private well or untreated water), standard carbon filters won’t cut it. You need a system rated for cysts and bacteria.
Reverse Osmosis (RO) systems are the most effective against viruses and bacteria like E. Coli. Alternatively, ultraviolet (UV) purification systems or whole house filters with UV stages are highly effective (3).
Which Filter Can Remove Fluoride?
Standard carbon filters (like basic pitchers) do not remove fluoride. You need specialized media. Reverse Osmosis (RO) is the most reliable method, removing 90%+ of fluoride.
Activated alumina filters are another option specifically designed for fluoride reduction. While effective, some users worry about trace aluminum leaching, though studies generally show levels remain safe (4).
Are Countertop Water Filters Worth It?
Absolutely. They are the “middle ground” sweet spot. They offer much better filtration than a tiny pitcher but cost a fraction of the price of an under-sink system.
They are also portable. If you rent your home, you can’t drill holes for a permanent system. A countertop filter gives you high-quality water without risking your security deposit.
Are Countertop Water Filters Safe?
Yes, providing you maintain them. The filter media itself is safe (usually carbon or ceramic). The danger comes from neglecting maintenance.
If you leave a filter unchanged for years, bacteria can grow inside the cartridge, potentially making your water worse than tap water. Stick to the manufacturer’s replacement schedule to keep it safe.
What Is the Best Countertop Water Filtration System?
In our analysis, the APEC RO-CTOP-C takes the top spot.
It combines the power of Reverse Osmosis with portability. It doesn’t just improve taste; it strips out heavy metals and dissolved solids that other filters leave behind. Plus, the installation is universally compatible with standard faucets.
Is Brita Water Filter Better Than Berkey?
They serve different purposes. Brita is a “polishing” filter; it makes municipal water taste better and removes some lead (if you use the Elite filter). It is cheap and easy.
Berkey is a powerful gravity filter that can handle a wider range of contaminants and holds more water. Berkey is better for purity and volume, while Brita is better for budget and speed.
How Often Should I Change My Countertop Filter?
It depends on the model and your water usage. Standard pitchers usually need changing every 2 months (or 40 gallons). Faucet-mounted countertop units typically last 6 to 12 months (500 to 1,000 gallons).
Check the manual. If you have “hard” water with lots of sediment, you may need to change filters sooner than the recommended date due to clogging.
Countertop vs. Under-Sink Filters: Which is Better?
Under-sink filters are invisible and save counter space, but they require plumbing work and permanent installation. Countertop filters are portable, install in minutes without tools, and are generally cheaper.
If you own your home and want a sleek look, go under-sink. If you rent or want to take your filter with you when you move, go countertop.
