Best Water Filter for Coliform Bacteria

Do you know how safe your drinking water is or do you drink from your tap without consideration? It is dangerous to assume your water source is safe and free from disease-causing contaminants like coliform bacteria. Numerous types of bacteria exist in the environment. One of the most common habitats for coliform is water.

Water Filter For coliform Bacteria
Best Water Filter For coliform Bacteria

Although some types of coliform are not harmful, their presence in your water is a sign that you need water purification. Pathogenic coliform bacteria like E.coli must be dealt with to ensure your family does not get sick. Not all forms of water purification work on E.coli.

Ultraviolet sterilization is the best and most sought after type of water filter for coliform. The powerful UV light used in sterilization can kill up to 99.99% of the bacteria. Reverse osmosis is also effective against E.coli.

Although chlorine treatment will deal with this bacteria, the smell and taste of your water might become unpleasant. Carbon and cartridge filters aren’t effective against E.coli because they easily pass through the large filters. If you are ready to purchase a water purifier for your home, here are some of the best water filters for removing coliform bacteria for you to consider.

Product Comparison Table

Product Name Best Feature
RKIN Countertop Reverse Osmosis Water Filter Compact and fashionable
Express Water Alkaline Ultraviolet Reverse Osmosis Purifier Has 11 stages of purification
HQUA-OWS-12 Ultraviolet Water Sterilizer Easy installation and maintenance
Aquasana Home Ultraviolet Water Filtration System Most effective for well water
iSpring Under Sink Reverse Osmosis Water Purifier Transparent housing makes monitoring easy

Best Water Filter for Coliform Bacteria


OnliPure Countertop Reverse Osmosis Water Filter 

What Are The Best Water Filter for Coliform Bacteria?
OnliPure Countertop Reverse Osmosis Water Filter

ir?t=aww101 20&language=en US&l=li3&o=1&a=B082GM2R2CThis tabletop filter comes in a compact and fashionable design making it ideal for small spaces. Loading and dispensing of water can be done from the front of the machine. You don’t have to clear extra space by the side or top for this, therefore, you can comfortably place this water filter in a tight corner.

No installation or assembly is required for this filter, you can use it straight from the box. This is very convenient and saves time. The zero installation water filter promises to eradicate up to 99% of water contaminants including E.coli, chlorine, heavy metals and more.

You only need 24w of energy to power this water filter, this is lesser than many light bulbs! After your water is filtered, some helpful minerals including magnesium and calcium are returned. This does not only increase the nutrition of your drinking water, but it also improves taste too.

When your water filter needs a membrane replacement, there is a trusty red light indicator to remind you. It is advisable to follow these recommended replacements to get the best filtration from your machine.


  • BPA free
  • Zero assembly design
  • Stylish and compact design to save space
  • Gives clean and crisp tasting water
  • Works quietly
  • The beautiful design is great
  • Weak knob
  • Susceptible to leaking

Bluonics UV Sterilizer Drinking Water Filter System 

What Are The Best Water Filter for Coliform Bacteria?
Bluonics UV Sterilizer Drinking Water Filter System

ir?t=aww101 20&language=en US&l=li3&o=1&a=B0110LVVP0This reliable water purification system will have you drinking clean, mineral-rich water in no time. Although the system looks daunting and complicated, installation is super easy as there is a self-explanatory guide book with picture help. After installing, using this water filter is also very straightforward.

With this filter, you can deal with pesky E.coli and other contaminants in your drinking water. It delivers powerful UV-C disinfection that removes up to 99% of coliform, cysts, and microbes from well water and other natural sources.

The 11 stages Ultraviolet Sterilization process is very thorough so you can be assured of excellent reliable results.


  • Double sealed filters
  • Leak stop valve saves water
  • Easy to install
  • Straightforward to use
  • Filtered water tastes better than bottled water
  • Leaks a little before water pressure stabilizes
  • Replacement parts are expensive

HQUA-OWS-12 Ultraviolet Water Sterilizer

What Are The Best Water Filter for Coliform Bacteria?
HQUA-OWS-12 Ultraviolet Water Purifier Sterilizer Filter

ir?t=aww101 20&language=en US&l=li3&o=1&a=B01N2YMU3OThis is a reliable ultraviolet water purifier and sterilizer. The brand designed this water filter as a direct response to the growing possible dangers of contaminants like E.coli, giardia, and cryptosporidium. This UV water cleansing system is very effective for dealing with such issues.

The demand for this product has increased over the years because it has proven to work well. The HQUA water sterilizer removes up to 99.99% of microbes and bacteria from water. With this UV water filter, you can enjoy fresh-tasting healthy water with your family without worrying about getting sick.

The UV light emitted by this filter will damage the fundamental characteristics of harmful bacteria in your drinking water. When this happens, the organisms cease to function, stop reproducing and eventually die off.  The treatment process is fast and effective.

Installing this water purifier is quite simple and does not require the use of chemical supplements. Because of this, you can enjoy clean water without the threat of chlorine residue from chemicals.

All equipment required for assembly is included in the package with a helpful booklet for step by step instructions. You only need to replace the quartz sleeve and UV lamp periodically.


  • Chemical-free operation
  • Environment-friendly
  • Comes well packaged and secure
  • Safe and reliable
  • Comes with an extra bulb
  • Gas tubes are frail
  • UV rays are very strong, avoid exposure to your eyes

Aquasana Home Ultraviolet Water Filtration System

What Are The Best Water Filter for Coliform Bacteria?
Aquasana EQ-WELL-UV-PRO-AST Whole House Well Water Filter System

ir?t=aww101 20&language=en US&l=li3&o=1&a=B005LJ8EXUir?t=aww101 20&language=en US&l=li3&o=1&a=B00LC1KRKOIf you need a powerful water filtration system to serve an entire house, this model from Aquasana is very ideal.  It is one of the most sought after water purifiers that has been tested and is trusted by people who use well water. Although it is quite expensive when compared to other filters, this high-performance water purifier works twice as hard and can filter up to 500,000 gallons of water in a year.

The machine is uniquely designed with an up-flow dual tank that prevents any clogging during filtration. The five-step water purification process will ensure that 99.99% of bacteria, viruses, and chlorine cysts are eradicated from your drinking water.

The sanitization process prevents the binding of minerals that forms scale. This means you will no longer experience limescale buildup while using your water.

Maintenance is also a breeze after this water filter is installed. you don’t have to worry about conducting rigorous back flushing and draining maintenance procedures. Simply change the pre and post flow filters as often as every three months to enjoy the outstanding performance. You will have every tap in your home dispensing clean, fresh-tasting water that is free of contaminants.


  • Purifies 500,000 gallons per annum
  • Most effective filter for well water
  • Makes water clean and soft
  • Filtered water tastes good
  • Stops limescale buildup
  • You cannot use bleach with the processed water or it turns brown
  • Expensive unit with an expensive installation cost

iSpring Under Sink Reverse Osmosis Water Purifier

What Are The Best Water Filter for Coliform Bacteria?
iSpring RCC7AK 6-Stage Under Sink Reverse Osmosis Drinking Water Filter System

ir?t=aww101 20&language=en US&l=li3&o=1&a=B005LJ8EXUiSpring developed an award-winning water filtration system with this under sink reverse osmosis water purifying system. It operates with a high-grade RO membrane filter that filters water contaminants down to 0.0001 microns.

At this level, nothing but pure water can pass through which means bacteria, giardia, coliform, mercury, sodium, lead, fluoride, and numerous other contaminants are eradicated. Your water will still retain quality taste as the sixth stage returns minerals and balances water PH levels.

This six-stage filter system comes fitted with top-notch proprietary filters that are so powerful you will not need a replacement for years.

The entire system is housed in a reinforced transparent housing that allows you to watch your filter work while protecting your water filter from damage. You can view sediment buildup and know when to change the filters before a problem occurs.


  • Final filtration stage restores a balanced PH level and healthy minerals
  • High performing purity and protection filters
  • Has high-quality parts
  • Super easy to install
  • Comes with proprietary filters, traditional filters do not work well on the system
  • Susceptible to leaking

Why Coliform Bacteria Is A Problem And How Can You Filter Them From Water

Coliform Bacteria
Coliform Bacteria in water

A coliform is a common form of bacteria found in different forms all over the environment. They can live in warm-blooded animals, in water, on vegetation and even inside the soil. Most coliform bacteria are generally harmful but some of them are pathogenic. If your water tests positive for coliform, you should know that there is a potential for disease when you and your family members drink that water without filtering.

If you drink water or eat food that has been contaminated by coliform bacteria carrying the substance, you are in danger of catching an infection.

The most common symptoms of coliform infection are stomach pains, bloody diarrhea, and vomiting. When such an infection gets a stronghold and causes severe damage, it can affect the kidneys, blood and urinary tract.

The coliform bacteria that affect water usually originate from animal and human waste that washes into lakes, creeks, and groundwater.

E.coli filter
E.coli filter for water

Some water filters are specifically designed to handle dangerous coliform bacteria like E.coli, but not all filters are built for this. If your water has tested positive for E.coli or other coliform bacteria, you must purchase a water filtration system that deals with this problem.

Top Considerations When Selecting A Home Water Filtration System

Not all water filters are the same and not all of them solve the same problems. You must consider purchasing a water purification system that addresses the biggest issue in your home. For some people, the issue is fluoride while for others, it is bacteria like coliform and E.coli. no matter the reason for your intended purchase of a reliable water filter system, make sure to ask yourself the following questions that will help you make the right choice.

What is in my water?

We all use water in our daily lives but rarely ever consider what the water contains. If you have been considering purchasing a water purification system for your home, the first thing you should probably do is order a water quality report to determine what’s in your water. After getting results from water analysis, you will be better informed so you can buy a water filter that addresses your needs.

Do I need to filter all the water in my house or just the drinking water? 

Do I need to filter all the water in my house or just the drinking water
Drinking filtered water

Most people opt for whole house water filter systems but you can always get a purification system that only works on your drinking water. The decision of whether to purchase a point of use filters like a reverse osmosis system or a point of entry filter for your entire house is personal.

Is my water supply private or is it from the city?

Is my water supply private or is it from the city
Private water supply system

Public water is relatively safe but many contaminants still get through since hundreds of them are not regulated. On the other hand, the private water supply is notorious for carrying bacteria and viral organisms.

How many people live in my house?

The number of people in your household will greatly affect the daily total water usage of the house. More people at home means more water usage. Water purification systems come in different sizes. You will find the most suitable size for your home when you can determine how much capacity you need.

Final Verdict

Some coliform bacteria can be harmful to the human body. You can be exposed to coliform through the water you drink. You must not hesitate to deal with this bacteria if you have detected its presence in your water or it can cause compounding problems that lead to severe health challenges.

Different types of water filtration systems are very effective in eliminating E.coli and other bacteria, viruses, and microbes from water.

Is your water contaminated by E.coli? If you are not sure, it is safer to conduct a test to ensure that you and your family are shielded from potential harm.

You don’t have a problem if your water is not contaminated, but you must get a water filtration system installed immediately if coliform bacteria are detected in your water.

We hope that this guide provides the assistance you need in identifying the problem and getting a reliable solution. We have provided water filters with different capabilities and within different budgets to be sure you can find an ideal fit for your house.

Make sure to carefully consider the points we discussed before making a final purchase.  You can share this post with your family and neighbors to enable them to find the best solution if they are struggling with E.coli in their water.

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