Best Water Purification Tablets that work in 2022

Water purification tablets are one of the best methods to purify water during emergency times.

Best Water Purification Tablets

Water Purification Tablets Comparison

 Nameimageeffectivenessshelf lifewhere to buy
1Aquatabs100 packs treats 200 quarts5 yearsBuy Amazon
2Potable Aqua 2 tablets 1liter4 yearsBuy Amazon
3Polar Pure Iodine 2,000litersBuy from Amazon
4Katadyn Micropur 1tablets 1liter5yearsbuy Amazon
5Aquamira30 gallons4 yearsbuy Amazon
655 Gallon Water Preserver Concentrate 55 gallons5 yearsbuy Amazon
7MSR Aquatabs Water Purification60 litersbuy Amazon
8Quake Kare1 tablet-1 literbuy Amazon
9Coghlan's Drinking Water Tablets1 tablet-1 quartzbuy Amazon
10Mightie Company Worldsbuy Amazon
11Ef chlor Portable water purification tablets50 gallonsbuy Amazon

A long time ago military used the cloth to drain water impurities and then boil water for a few minutes.

The method was very effective because it took more time for the army to get safe water for drinking.

Also, the method was hazardous because they were using firewood to boil water that made it easy for an enemy to locate.

All those setbacks made researchers introduced another alternative, and a water purification tablet was born.

In this article, you will learn the best Water Purification Tablets that you can use to purify water.

What are water purification tablets?

In water purification tablets there are chemicals put in water to kill micro-organisms and other impurities found in water to make it safe for human use.

Where to use water purification tablets

For outdoor activities

The water purification tablets and portable water filters are the best fit for outdoor activities such as hiking. The reason being of it’s lightweight and doesn’t take big space in your bag.

Emergency disaster

During times of flood, hurricanes, earthquakes, and other disasters water tablets are used to purify water.

Military, peacekeepers use the water tablets, and soldiers to clean water for drinking.

It is also used by international travelers who visit countries with a poor water treatment system, don’t have safe water, and during emergency times.

How do water purification tablets work?

Water purification tablet has different ingredients, and each requires different quantity, water temperature, and time to take effect or work.

Most of them work the same you put water in the container, add the tablets, wait for 30 minutes to dissolve, and to be effective.

Different types of ingredients contained in water purification tablets

Chlorine-based tablets

The tablets contain an ingredient called Halazone.  It is used in areas with low hygienic and is best to remove E. coli bacteria in the water. The only disadvantage once opened is used within a maximum of three days

Chlorine bleach tablets

The chlorine bleach tablets you will wait for 30 minutes to one hour to have your water ready for drinking. The tablet is the best alternative, right for the long term, and widely used.

Chlorine dioxide-based tablets

It is effective against impurities such as viruses, bacteria, and cysts. The only side effect once used for a long time it causes certain body tissue to change the standard color to gray. Also, you will have to wait up to four hours to get ready for water for drinking.

When stored in an airtight condition may be retained for years

Iodine crystals tablets

The method works on different water conditions. If the water is cold, you allow staying for more than 30 minutes to do its work and if the water is warm within 30 minutes the water is safe for human consumption. The downside of the tablet in cold water some cysts are not killed and if you consume non-dissolved crystal can be deadly.

The best part if it is not exposed to air the shelf life can be virtually endless.

Iodine tablets

The tablet is best to kill parasites, pathogens, and protozoa in water. If water is warm, cold, and dirtier within 30 minutes, you have clean, safe drinking water. The only downside it changes the taste of water and makes it less appealing but you can add vitamin c tablets to make water taste good or neutralize the bad taste.

Also, iodine tablets cannot be used for a longer time if you have thyroid complications, pregnancy, and iodine sensitivity.

Are the water purification tablets safe?

I would say yes or no. When we use and store water purification tablets the right way, there are safe.

To make water purification tablets first heat the water to raise the water temperature, it will allow purifying tablets to work quicker. Also, when you raise water temperature above 20 degrees, impurities that take a long to neutralize like cysts can be killed within 30 minutes.

The water purification tablet does not remove physical particles like sediments and purify chemically contaminated water. Filter your water using a filtering system to remove physical particles.

 Drop your tablet and wait for 30 minutes to make it effective and dissolve properly in water.

Drink the treated water within 24 hours. If you wait for treated water to stay for more than 30 hours of water may get contaminated again, and the bacteria may have a chance to reproduce. The above advice will make water purification tablets safe.

My no answer, if you are using iodine crystal tablets and consume non-dissolved crystals, can be deadly.

Do water purification tablets affect the taste of water?

Some of the tablets affect the taste of water. it’s not a big problem you can add vitamin c tablets, water sweeteners, water taste enhancers, or other neutralizers to improve the taste.

Top pick

  1. Aquatabs Water Purification Tablets
  2. Potable Aqua Water Tablets
  3. Polar Pure Iodine Water Filter Purifier
  4. Katadyn Micropur Tablets
  5. Aquamira Chlorine Dioxide Water Treatment drop
  6. Survival kits online 55 Gallon Water Preserver Concentrate 
  7. MSR Aquatabs Water Purification
  8. Quake Kare Water Purification Tablets
  9. Coghlan’s Drinking Water Tablets, 50 Tablets
  10. MIGHTIE Water Purification Tablets
  11. Ef-chlor Portable water purification tablets  
Best Water Purification Tablets reviews
[su_box title=”iodine water purification tablets” box_color=”#1a30ba”]
  1. Aquatabs Water Purification Tablets


  • Quantity – 100 packs treat 200 quarts
  • Ingredients – Troclosene Sodium
  • Shelf life – 5 years
  • Treatment time – 30 minutes

The product has been in use for emergencies such as tornados, hurricanes, earthquakes, and floods for over 20 years.

After mixing the tablets the water is ready after 30 minutes.

The 100 packs treat up to 200 quarts of water.

The tablet does not give an unpleasant taste or change the color of the water.

The source of water to be treated may be rainwater, river, wells, lakes, and cisterns.

Aquatabs are effective to kill microorganisms in the water to prevent water-borne disease.

An active ingredient of aqua tabs is Troclosene Sodium. It does not contain iodine thus makes it safe for a pregnant woman, a person with iodine allergies and thyroid conditions.

Aquatabs is certified by different bodies such as NSF / ANSI 60, US Environmental Protection Agency (EPA), International Red Cross, Red Crescent Movement specification, UNICEF specification, and NATO makes it safe for human use

Read more facts about Aquatabs water purification tablets here


  • The tablet does not leave the water with an unpleasant taste or change color.
  • It does not contain iodine so suitable for a person with iodine allergies
  • Different worldwide body certifies the product makes it safe for human consumption


  • The product is not effective against cyst cryptosporidium. If you suspect Cryptosporidium in your water source use alternative water filtration method
  1. Potable Aqua Water Tablets


  • Effectiveness – 50 Tablets 10 quarts of water.
  • Active substance – Tetraglycine Hydroperiodide, when released in water, produces Titratable Iodine.
  • Shelf life – 4 years when stored properly.
  • Treatment time – 35 Minutes.

Water is ready within 35 minutes

One bottle has 50 tablets that are enough to treat 20 quarts of water or 2 tablets one liter of water.

The tablet is ideal for hiking, backpacking, and emergency preparedness

It has Tetraglycine Hydroperiodide ingredients which liberate Titratable Iodine when released in water.

The product is effective against Giardia Lamblia


  • It is lightweight
  • Proven effective against Giardia Lamblia
  • Improves the taste of water


It is not proven effective against viruses and cysts such as cryptosporidium

Potable Aqua water purification tablets comparison

 product name

Imagefiltration stage
Replacement filterwhere to buy
1APEC Top Tier Supreme Certified High Flow

590APEC Water Systems FILTER-MAX-ES50 Buy from Amazon
2iSpring RCC7575iSpring F15-75Buy from Amazon
3iSpring RCC7AK675iSpring F4
(RO) Membrane Replacement 75 GPD
iSpring FA15 Alkaline
Buy from Amazon
4iSpring RCC7AK-UV775iSpring F4
(RO) Membrane Replacement 75 GPD
iSpring FA15 Alkaline
iSpring UVB11 UV lamp
Buy from Amazon
5Express Water RO5DX 55050 GPD Membrane
6 months filter set
Buy from Amazon
6Home Master TMAFC-ERP-L775Home Master ISetTMA8 Artesian And HydroGardener Replacement Water Filter Change SetBuy from Amazon
7Global Water RO-5055Replacement Filter Set by Global Water
50GPD Membrane
Buy from Amazon
8Watts Premier RO-Pure 531411450Watts Premier Ro Pure Replacement Filter 6-pack Plus MembraneBuy from Amazon
9Whirlpool WHER25 3Whirlpool WHEERF
Whirlpool WHEERM Membrane
Buy from Amazon
10Aquasana OptimH2O Aquasana Replacement Filters
Aquasana membrane
Buy from Aquasana
Buy from Amazon

11General Electric Appliances GXRM10RBL 3GE FX12M Membrane
Genuine GE FX12P Replacement Filters
Buy from GE appliances part
Buy from Amazon

12AmazonBasics Reverse Osmosis Home Drinking Water System450Amazon Basics AMZN-PB-TLRO4RCT-5PK
Amazon Basics AMZN-TLRO4MC50T membrane
Buy from Amazon
13SimPure Reverse Osmosis Water Filtration System 575SimPure SP7
Simpure membrane
Buy from Amazon
14PUCRT Reverse Osmosis Water Filtration System RO Water Purifier 5100PUCRT 100GPD Replacement Filter Buy from Amazon
15Pelican Water PRO-RO 650Buy from Pelican water
Buy from Amazon

A bonus video on how Portable Aqua works

  1. Polar Pure Iodine Water Filter Purifier

The product kills all viruses and bacteria.

Polar Pure is EPA certified and treats up to 2000 liters of water.


[su_box title=”chlorine dioxide water purification tablets” box_color=”#1a30ba”]
  1. Katadyn Micropur Tablets


  • Effectiveness – one tablet treats 1 liter of water.
  • Ingredients – Chlorine Dioxide.
  • Shelf life – 5 years
  • Treatment time – From 30 minutes takes up to 4 hours if the water contains Cryptosporidium

The tablets are effective against all microorganisms, viruses, bacteria, giardia, and cryptosporidium

One tablet treats one liter of water

The product doesn’t produce an unpleasant taste

Micropur tablets are chlorine dioxide tablets

It takes 30 minutes to treat water but if the water contains Cryptosporidium takes up to four hours to process.


It is effective against viruses, bacteria, giardia, and cryptosporidium.


The item is seasonal and not available all year season

  1. Aquamira Chlorine Dioxide Water Treatment drop
chloride dioxide tablet

The Aquamira water treatment unlocks the power of chlorine dioxide to kill bacteria and enhance the taste of treated water.

It has a four-year shelf life from the manufacturing date and can treat up to 30 gallons.

  1. Survival kits online 55 Gallon Water Preserver Concentrate 

The survival kits online water treatment safely treats your water and allows it to be stored for an emergency for five years.

The product is tested, proven, recognized, and licensed by the U.S. and state EPA’s Proprietary formula and strict laboratory analysis insure potency.

This product is a proprietary formula of stabilized and ph-balanced sodium hypochlorite with highly effective residual action that kills bacteria, viruses, molds, and fungus.

  1. MSR Aquatabs Water Purification

The MSR water purification is US EPA approved to remove viruses, bacteria, and Giardia cysts effectively but it is not useful against Cryptosporidium.

Each package has 30 tablets that treat up to 60 liters in 30 minutes.

  1. Quake Kare Water Purification Tablets

The Quake Kare Water Purification Tablets are great for emergencies and outdoors.

One tablet purifies one liter of water.

  1. Coghlan’s Drinking Water Tablets, 50 Tablets

The water tablet is great to have on hand while hiking or camping.

One tablet treats one quart of water.

  1. MIGHTIE Water Purification Tablets

The Mightie Company Worlds’ purification tablet cleans drinking water in 30 minutes and effectively kills microorganisms in the water to prevent cholera, typhoid, dysentery and other water-borne diseases.

Each package has 100 sealed tablets with up to five years of shelf life.

It is certified by NSF/ANSI and approved the formula for routine use by the World Health Organization (WHO)

  1. Ef-chlor Portable water purification tablets  

The package has ten tablets that purify a total of 50 gallons (one tablet use to disinfect five gallons) and let stand for 30 minutes.

It is effective against BACTERIA, VIRUSES, FUNGI, and PROTOZOA.

The stable tablet with a shelf life of 2-3 years and is resistant to organic spoilage.


Before using water purification tablets make sure you read information, usage instructions, and directions on the packaging.

Advantages of water purification tablets

The water tablets are lightweight and do not occupy a large space in your bag thus makes them portable.

You require no special equipment when using it. You just need a container to put water and tablets.   

There is no electricity required to make it effective thus makes it suitable for remote areas or regions with the power problem. Some tablets need water to be heated which can be done with firewood or other sources of fire.

If stored properly in an airtight container can be used for the long term to purify water.

The water purification tablets are affordable and accessible. The tablets are available at most pharmacies and stores, and they cost an average of $3 for a packet containing 50 tablets.

Disadvantages of water purification tablets

  • It is not advisable to expectant women, the person who has iodine allergies and thyroid condition.
  • The tablets do not remove all impurities such as particulate (sediment& silt) and chemically contaminated water
  • When using iodine crystals tablets and consume non-dissolved crystals can be deadly.
  • It is not advisable to use water tablets on a long-term basis. Use it mostly for emergencies and when you are desperate to clean your drinking water, and there is no alternative.
Best brand of water purification tablets in the market
  • Aquatabs
  • Katadyn Micropur
  • Aquamira
  • Portable Aqua
  • Polar Pure

What to consider when buying water purification tablets

There are so many different types of water purification tablets in the market and choosing the right product can be challenging but if you follow our buyer’s guide the process can be very much easy.

  • Ingredients in the water tablets

Some tablets have ingredients that take longer to purify water, stains clothes, change skin color, and changes the smell and odor of water

  • Shelf life

Water purification has different shelf life some when opened is supposed to be used for a maximum of three days others stays longer. Check the expiry date you don’t have to buy something that will expire before the next usage

  • Allergies

If you have an expectant mom, someone who is iodine allergies and thyroid condition this is not the right method of water purification.

  • Cost of water purification tablets and where to buy

Water purification tablets are affordable and available in pharmacies, online stores, and nearby stores. Most of them cost an average of $3 a packet of 5o tablets.

Do water purification tablet works?

Water purification tablets are effective against impurities such as viruses, bacteria, parasites, pathogens, protozoa, and cysts

Do water purification tablets kill viruses?

Water purification tablets is effective in killing viruses, bacteria, and cysts

What is water purification tablets made of?

Made purification tablets are made of the following ingredients chlorine-based tablets, Chlorine bleach tablets, Iodine crystals tablets, and Iodine tablets

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