PUR FM 3700 Review – Advanced Faucet Water Filter

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PUR FM-3700

As the world becomes more cautious about what we eat, drink, and how we sleep, most people are now concerned about the quality of water in their homes. At first, water was thought to be harmless and odorless. However, with the increased air and soil pollution, more harmful contaminants are driven into water sources, making them unfriendly.

Therefore, the question is how to treat this water before drinking or showering it. Today, let us look at the PUR 3-Stage Advanced Review, why you need it, its upsides, and downsides.


Your taps may look clean until you realize that tap water may contain lead and other harmful contaminants caused by leaching lead service lines. This is why you need a high-quality faucet water filter like the PUR FM-3700 Advanced filter. PUR filtration systems have been in the market for a long time, reducing over 70 harmful contaminants, including lead, mercury, and some pesticides.

They are NSF and WGA certified and eliminate more contaminants than other brands. With over 30 years of service, the PUR FM-3700 Advanced faucet water filter works to provide the healthiest and tastiest water for your family. This faucet water filter also uses three stages of the filtration process, including natural mineralization that improves the taste of the water and enhances health benefits.

Features of PUR FM-3700

Is it all about money and health? This is the main question that you should ask yourself when going for any faucet filter. While the price of the product may not be of great concern, buying a water filter with outstanding features makes it worth your coin and protects your health. Therefore, here are the main features to check for when looking for PUR 3-Stage Advanced Review.

PUR FM-3700 Advanced Faucet Water Filter
  • Advanced Filtration Power

The most vital aspect to pay attention to when buying a new filtration system is its filtration power. There are many filters you can get in the market, but how well do they work. Luckily, this faucet water filter comes with a reliable filtration system that removes more than 70 harmful contaminants.

It eliminates 99% of chlorine, lead, and other heavy metals from your water, leaving it softer and cleaner. PUR FM-3700 Advanced filter has three layers. The first carbon layer is eco-friendly and filters all the segments and live organisms like viruses and bacteria.

The second ion exchange layer is essential in balancing the water pH while leaving behind useful ions. This is because our bodies need these essential ions and minerals for proper functioning. The third mineralization stage enhances the water taste, giving more health benefits.

  • Capacity

We can’t tell how long your faucet filter will last without looking at how many water gallons it can filter before replacing it. Most sellers will tell you how their products will last for six months or one year before replacement. However, the capacity is the only significant feature to look for when assessing its lifetime.

PUR FM-3700 Advanced filter can filter up to 100 gallons of water before you think about replacing it. Therefore, if you use a gallon in a day, it will serve you for three months, while it will take you only one month to replace it if you use three gallons per day. This shows this filter has a shorter lifetime. However, many people still choose it due to its filtration power.

  • Budget-Friendly

Think about buying pure water every day, which can cost you about $400 to buy 100 gallons of clean water. For instance, one gallon is about four liters of water, meaning 100 gallons are equal to 400 liters. This is about 800 bottles of clean water. Therefore, to get 100 gallons of water, you have to spend almost $400, depending on your consumption.

Additionally, this filter reduces water pressure once connected to the faucet. You will have to wait longer to fill the same amount of water, but the low pressure saves you a lot of money and avoid water wastage.

PUR FM-3700 Advanced filter also has an on-off handle. You can turn the filter off when dealing with something that does not require filtered water like washing the floor and wateWhen the lifetime of the filter, which saves you money to replac, you can turn the filter off,e it sooner.

  • Easy Installation

PUR FM-3700 Advanced filter requires a one-click installation process and does not require any tool. All you have to do is to follow the installation instruction provided. However, if it is your first time fixing it, try to tighten the base of the faucet to prevent breaking it due to the weight of the filter.

This step is essential, especially for flimsy faucets. This type of filter is not also suitable for pull-out or handheld faucets. It is only designed for regular sink faucets.

  • Premium Taste

PUR FM 3700 Advanced filter is loved for its unique MineralClear base included in the filtration process. Water leaves this base feeling refreshing and crispy. The feature also helps to remove chlorine and other harmful chemicals, leaving your water clean, tasty, and satisfying.

  • NSF and WQA certified
  • It has two years warranty
  • Easy to install to any faucet
  • 3 steps effective filtration process
  • Removes 99% of lead, chlorine, and other heavy metals
  • Does not filter well water
  • Only 100 gallons capacity
  • Not suitable for high temperatures


PUR FM 3700 Advanced filter is your best choice if you are not sure whether you should install something heavy-duty like an under-sink filter. All you need is to fix it on top of the faucet and you are ready to go. You can also remove it at any time or use the on-off switch to extend its lifetime.

Therefore, this is your option if you are only concerned about getting clean and tasty water for a small family. However, according to PUR FM 3700 Review, this type of filter is only suitable for regular sink faucets, but this should be of less concern since it has a powerful filtration system.

Jeremy Lee is a researcher and part-time blogger who has a passion to discover cutting-edge technologies related to water filtration. He knows the importance of purified water in our lives and started this blog aiming to provide the best product reviews, buying guides, and other useful information related to water. When not working, he loves to spend time with his beloved wife and two kids.