(10 customer reviews)



Many people are unfamiliar with the proper use of NaDCC tablets in overhead and underground water tanks. To effectively utilize ef-chlor water purification tablets for household water tanks, simply drop one tablet into up to 500 liters of water. This action aids in eliminating 100% of bacteria and all known viruses within 30 minutes. Ef-Chlor stands out as the premier choice for water purification tablets for household tanks worldwide.

Ef-Chlor #1 Best Water Purification Tablets For Household Tank, How to Use NaDCC Tablets In A Overhead And Underground Water TankEf-Chlor is a distinguished brand of NaDCC tablets designed for drinking water purification, disinfection, and sterilization purposes. It boasts diverse applications, including purifying clouded water and household drinking water, as well as sterilizing equipment or surfaces in home, office, clinic, hospitals, food manufacturing, or service industries.

NaDCC Tablets consist of 60% chlorine, featuring an effervescent additive that mitigates the chlorine taste and ensures the product’s safety, guarding against possible overdoses. Ef-Chlor stands out as the preferred choice for NaDCC tablets, widely adopted and endorsed by reputable organizations such as the World Health Organization (WHO), major aid agencies, disaster relief organizations, NGOs, municipal corporations, ministries of health, peacekeeping/defense forces, marine, airlines, and more.


✓ 50 NaDCC Tablets of 1.67gm, Use 1 Tablet In 500 Litres of Water
✓ NaDCC Based Chlorine Tablets For Water Purification Use Only

#1 Best Water Purification Tablets For Household Tank

Ef-Chlor Importance of Water Treatment Tablets For Household Tank, How to Use 1.67gm NaDCC Tablets

Ef-Chlor stands out as the most popular and effective water purification tablet for household tanks, specifically designed to eliminate pathogenic microorganisms from water. These water treatment tablets from Ef-Chlor contain NaDCC, or Sodium Dichloroisocyanurate, a form of chlorine renowned for its efficacy in water purification, disinfection, and sterilization. In contemporary times, Ef-Chlor’s water purification tablets have gained widespread use for various purposes, including drinking water purification, acting as a disinfectant, a cleansing agent, for washing fruits and vegetables, surface cleaning, and sterilization.

Contaminated water can pose a significant threat to your health, potentially disrupting your plans. Prevention is undeniably better than cure, and Ef-Chlor’s water purifying tablets provide a reliable solution by rendering water safe without the need for boiling. It’s advisable to keep NaDCC chlorine tablets on hand at all times, particularly when access to pure, safe, or potable water is uncertain. The most effective way to safeguard yourself is by using an Ef-Chlor 1.67gm NaDCC tablet, capable of purifying up to 500 liters of water in household tanks.


Advantages and Benefits of Water Purification Tablets For Household Tank
    • Very safe to handle and store, Stable tablets with 3 years shelf life.
    • Recommend by leading infection control experts worldwide.
    • Effective against virtually all known Bacteria, Viruses, and Spores.
    • Compact storage and transport reducing transport costs.
    • Economic and accurate-no under or over-dosing.
    • Greater Biocidal Effect – Rapid release clear disinfecting solution.
    • Fast dissolving and kills bacteria and viruses in just 30 mins.
    • Available in a wide selection of tablet strengths.
    • Iodine FREE & Resistant to organic spoilage.
Importance of Water Treatment Tablets For Household Tank

Drinking water, often referred to as potable water, is deemed safe for consumption and suitable for food preparation. Pure water stands as a fundamental necessity for human well-being, crucial for maintaining good health. Unfortunately, billions of people worldwide still face challenges in accessing potable water, resorting to either untreated drinking water or obtaining water from sources that are unsafe or contaminated.

How Water Purification Tablets Work In Household Tank

When introduced to water, Ef-Chlor dissolves, releasing a carefully measured dose of Hypochlorous Acid (free available chlorine), universally acknowledged as a safe and effective water disinfectant. These water purification tablets exhibit rapid action within household tanks, purifying water in just 30 minutes. Once the water is disinfected, it becomes safe for consumption. Ef-Chlor proudly holds the position as the world’s number one brand in the realm of water purification, disinfection, and sterilization tablets on a global scale.

These tablets are characterized by their quick-dissolving and effervescent nature, making them efficient for water purification, treatment, disinfection, and sterilization purposes. Ef-Chlor water purification tablets, based on Sodium Dichloroisocyanurate (NaDCC/SDIC), are effective in eliminating microorganisms in the water. They serve as a preventive measure against diseases such as cholera, typhoid, jaundice, diarrhea, dysentery, giardiasis, polio, infantile diarrhea caused by rotavirus, candidiasis, bacillary dysentery, skin infections, escherichia coli / e.coli bacterial infections, urinary tract infections, and other water-borne diseases.

Ef-Chlor Manufactured By Hind Pharma stands as a leading name in NaDCC tablets for water purification and disinfection purposes. You can explore the List of Best NaDCC Tablets

Additional information
Brand Name





Purify Upto 500 Litres of Water


50 Tablets In A Jar

Perfect For

Drinking Water Purification, Sterilization, Home Water Purification, Household Tank Water Purification, Household Water Treatment, Overhead Tank Water Purification, Underground Tank Water Purification, Water Purification For Household Tank, Water Purification For Overhead Tank, Water Purification For Underground Tank, Water Tank Purification, Water Tank Treatment


Hind Pharma

Usage / Application

Disinfection, Fruits and Vegetables Wash, Sterilization, Surface Cleaning, Water Purification, Water Treatment

Prevent Diseases

Diarrhea, Typhoid, Jaundice, Dysentery, Giardiasis, Polio, Infantile Diarrhea by Rotavirus, Candidiasis, Bacillary Dysentery, Skin Infections, Escherichia coli / E.coli Bacteria Infection, Urinary Tract Infections, Other Water Borne Diseases

Export Worldwide

For Emergency Relief Supply, Tender Opportunity, Institutional Supply, Authorized Distributorship, Manufacturing For Export, Private Label Manufacturing

How to Use 1.67gm NaDCC TabletsEf-Chlor Advantages and Benefits of Water Purification Tablets For Household Tank, How Water Purification Tablets Work In Household Tank

✓ For emergency use with clouded water: Dissolve 1 tablet in 250 litres of clouded water. Heavily contaminated water should first be filtered or allowed to settle. (Water of unknown quality, surface water and open wells.)

✓ For clear or household drinking water use: Dissolve 1 tablet in 500 litres of clean and clear water. (Water from boreholes and clear municipal tap water).

Packaging: 50 NaDCC Tablets In 1 Jar

Dissolving Time: Wait for 30 min minimum before use.


Technical Specification & Requirement of Chlorine

Each uncoated ef-chlor tablet contains
Sodium Dichloroisocyanurate (NaDCC) 1.67gm | Available chlorine 1gm

Requirement of Chlorine for Water Treatment Across the World:

Source of WaterAmount of Chlorine Required
Bore Well Water2 ppm (2mg per litre)
Well Water3 ppm (3mg per litre)
Pond Water / River Water5 ppm (5mg per litre)

NOTE: If the water to be treated is dirty/murky/turbid/muddy then it should be filtered through a cloth such as a t-shirt/filter cloth until clear or allowed to sit until the sediment settles down. The decanted clear water should then be disinfected using Ef-Chlor 1.67 gm tablet.

10 reviews for Water Purification Tablets For 500 Litres – 1.67gm NaDCC Tablets
  1. Stephania (verified owner)

    I like this item and also the customer service of them.

    1 product
  2. Jaunita (verified owner)

    Quite easy to use. I use it to water treatment, it work so good, surely will buy again.

    1 product
  3. Gianni (verified owner)

    Thanks to ef-chlor for this amazing deal, I was able to find a solution to my problem in a short time. 🙂

    1 product
  4. Stella (verified owner)

    I think this is amazing. Lots of features and customizable from every point of view.

    1 product
  5. Jayce (verified owner)

    Hope to see your improvement over time.

    1 product
  6. Kayleigh (verified owner)

    Been using it for a while, I usually don’t write a review but this time I am truly convinced to write.

    1 product
  7. Paula (verified owner)

    The first time I got the urges to leave a comment, but this is simply a top-notch thing you can find.

    1 product
  8. Trent (verified owner)

    I want to say thanks to the support team for helping with my continuously silly questions, you’re the best!

    1 product
  9. Mike (verified owner)

    A promising product, worth trying

    1 product
  10. Keanu (verified owner)

    Got some issues, but it works for me.

    1 product

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