What is a Biosand Filter?

A biosand filter (BSF) is an adaptation of the traditional slow sand filter, which has been used for community drinking water treatment for 200 years. The biosand filter is smaller (about 1 m tall, 0.3 m wide on each side) and adapted so that it does not flow continuously, making it suitable for use in people’s homes. The filter container can be made of concrete or plastic. It is filled with layers of specially selected and prepared sand and gravel.

The sand removes pathogens and suspended solids from contaminated drinking water. A biological community of bacteria and other micro-organisms grows in the top 2 cm of sand. This is called the biolayer. The micro- organisms in the biolayer eat many of the pathogens in the water, improving the water treatment.

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our stories

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I am first person who initiated to buy Bio-Sand Filter to villagers.

Sushila Pariyar is a resident of Barbardiya Municipality Ward No 8, Dhudhha, Bardiya. She is 28 years old. She has 4 family members in her family. This is a hamlet where most of the Dalit and landless people are living...

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Bio-Sand Filter assisted to change our habits.

Geeta Devi Sunar is a resident of Barbardiya Municipality Ward No 8, Bhagatpur Bardiya district of Nepal. She is 36 years old approximately. She has 6 family members at her home. She is from Dalit community...

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Days of suffering for drinking water gone.

Tulsa Sunar is also resident of same hamlet of Barbardiya Municipality, Bhagatpur. She is 50 year approximately including 4 more family members. We used to drink water from tube-well. Government personnel were also...

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FOR QUERIES ABOUT BIOSAND WATER FILTER

For any queries about biosand filter please feel free to contact us.

Call us: (NTC) +997 9858042224, (NCELL) +977 9825524224

clients feedback

  • Product is very good for this value, it works perfectly fine in hard water, there is no smell or impurities in filtered water, and water tastes good too. I’m happy with the product. Starts up quickly and no complaints so far. Yet to see how much maintenance is needed!. I’m happy with the customer care services as well; they have immediately addressed my query & send their technician to check the default.

    five-star Rajan Gurung / Nepalgunj, Nepal

    Bought this with the intention of storage and purification of water and within the last 7 months i have had Kent technicians come at least 7 times to clear an issue that seems to be common to kent water filters. The water flow stops in 1 week max and only drops come out, which means the storage takes one full day to complete. I understand this if it is once in a while but this is entirely unacceptable.

    five-star Ram Chaudhary / Barabardiya, Nepal
  • Prakash BSF Udhyog is making amazing filters at very affordable price. The water flow stops in 1 week max and only drops come out. I have been using their filter from past one years and I don’t have any issues or complain. When I purchased, my friends said to me don’t buy this product even though I bought and I am very happy to used this product.

    five-star Krishana Sunar/ Banke, Nepal

    The service people come and knock the canisters and clear the grime etc and then it works for another week. They didn’t replace the faulty part till now even so that the product is in warranty! I have had aquaguard at the same location which finally died out after 8 years which didn’t have such a problem at all so it is not water impurities it is just poor engineering! Stay away from Kent.

    five-star Sujan Gaire / Kohalpur, Nepal
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