Korean Natural Farming – Bacteria Mineral Water

10. Bacteria Mineral Water (BMW)

(1.) What is BMW?

It is not an overstatement to say that one farms with water. Water is not merely moisture, for there are also various minerals in water which affect the life of the crops. To obtain sources for clean and good water is a basic necessity in farming. In some countries, including Japan, they are actually selling specially processed water for agriculture or stockbreeding. This signifies the importance of water. Even the harvest yield and its quality depend on the water.

Manufacturers have complicated ways of explaining their products, however the the basic principles of making good water are simple; make the water particles smaller for better absorption and to condition with minerals and microorganisms. This can be made by you!

The minerals and IMO’s in the rocks will dissolve into the water and you will get treated water for agricultural use that is rich in minerals, microorganisms and oxygen.

(2.) How to make BMW

1.  Dig a pond  of 120cm depth.

2.  Cover with plastic sheet to hold water.

3.  Make waterfall equipment above the pond.

4.  Prepare variety of rocks (elvan must be included); break them with a hammer so they have sharp edges.

5.  Put the rocks in a steel sack.

6.  Put the IMO3 in a cotton cloth sack.

7. Secure both sacks so that they are just below the surface. The appropriate location of IMO would be where the water goes through the sacks and creates a whirlpool.

8. Let the waterfall smash down on the rocks.

9. At first, the IMO sack will drown. But after a while, the sack will float. This is when the material inside should be changed.

(3) How to use BMW

BMW can be used for many purposes. You can give directly to crops or animals. This will cure chicken or pig diarrhea caused by drinking water. Adding seawater (1/30) will improve the water quality because it is rich in salt and various minerals. When there is a drought, this water can be used for irrigation. It makes the crops endure drought better and makes them healthier. If there is an odor in livestock housing or when the fermentation of their feces is slow, the BMW may be used as a drink or sprayed on the floor. The odor will disappear and the floor will become clean.

Koreans called water coming out from between rocks “medicine water” and the water that ran through the humus of valleys “ginseng water”. This is because that water had special effects. BMW was developed in order to make this artificially and utilize it.



  1. April 12, 2013 at 2:22 am

    Has anyone got photos of this type of set-up, or some experiences ?

    • April 12, 2013 at 3:01 pm

      Hi Michael,

      I haven’t seen a set up myself. However, Eric Toensmeier, award winning Permaculture and Perennial Crop guru, has asked me to make some inquiries on various things in that direction. So I might find out more on that score soon.



      • April 13, 2013 at 11:20 am

        Hi Ian,

        Thanks for that. Town supply water is mostly ‘dead water’, but the chlorine/ chloramine is a big problem. I think there still is a good amount of chlorine/ chloramine that gets past my $$-big carbon cartridges. I wish there was a cheaper, more affective way?

        Glad to come across KNF – BMW is a good way putting oxygen, minerals & bacteria back into an often overlooked item, water.

        Love Eric Toensmeier book : Peren. Veg.


      • April 13, 2013 at 12:56 pm

        I’ve pondered the same thing with regards to Chlorine and Chloramine and the only thing I could come up with is using charcoal you make yourself. There’s a bunch of sites on youtube which show you how to make biochar (biochar being charcoal you are going to use as a soil amendment [everyone and their aunt is still looking for the lost secret of terra preta], essentially by burning it slowly in the relative absence of air. It’s not that difficult and the equipment is so elementary it’s laughable. It took me a while to figure out a source that would be convenient enough, large enough and free enough, until I heard about Starbuck’s Grounds for Gardens program, whereby you can walk into any Starbucks and ask them for used grounds. I figure this still would not be enough to treat all the water you are using, so you should look at harvesting rainwater if you can, and only using tap water as a back up. The thing about harvesting rainwater off of a roof, I am told, is that if the roof is basically toxic, ie a tar surface, lead or some nasty similar substance, then you need a flush thingummy, which removes that from your rainwater barrel.

        There’s a really good video on biochar in which the charcoal is doused in water to which EM liquids have been added. You should always drop charcoal into water before putting it in the soil or else it will soak up the water like a sponge and leave none for your plants.

      • April 13, 2013 at 1:01 pm

        If you live anywhere near a source of seashells, this can also help with crap in the water, though in a different way. A project to clean water in Vietnam found that ground up seashells could remove heavy metals and iodine from water. Apparently the heavy metals and other contaminants displace certain elements in the shell matrix and become trapped in the matrix, releasing the element, I believe Calcium, into the water. Calcium in water changes the PH and so you know when the shell matrices have absorbed all they are going to by using a simple PH test. At this point you have to replace the shells in the tank.

  2. April 14, 2013 at 12:43 am

    Hi Ian, I read that some KNF people dig a foot deep trench in their garden and make Bio-Char there,covering the fire when the colour of the smoke changes. Great subject.
    We live in Australia QLD/subtrop. but we can get a decade of little rainfall. I thinking about recycling my shower/washmach. water through a cannel of reed plants and oxygenating in some way.
    Does Charcoal remove chlorine? I always thought woody material like peat-moss, straw,material high in carbon are good for chlor.-removal?
    Not 100% sure. I have a small sand filter from a spa syst. ca. 400 x 200
    If I can work out what to use , like layers of charcoal, crushed shells, straw? etc. , it would be a better route to go?

  3. April 14, 2013 at 2:12 pm

    The filters you are already using use charcoal, albeit of the activated sort. From what I read to turn ordinary charcoal into activated charcoal, you need to use pressurised steam or chemicals, both processes are quite beyond me and doubtless too dangerous for one of my skills to even consider.

    Videos on youtube show you how to make a steel drum of charcoal at a time. Used coffee grinds would seem to be ideal for this, since they’re basically a hardwood that hasn’t been treated with anything like a preservative or other chemicals. It’s one of those garbage in, garbage out deals, with coffee grinds being clean. Where I am there are always timber from pruned trees available, but since Korea has trucks going around blowing insecticide into the air in cities and the pollution is pretty bad to begin with, it would probably be better for me if I charred something from Colombia, Kenya or Vietnam.

    Yes, I’d got with layers of charcoal, sand and shells.

  4. Romeo said,

    July 14, 2013 at 12:46 am

    Hi Ian,

    I came across your article on Korean Natural Farming-BMW. Presently, I am the Director for Research and Development of Isabela State University, Ilagan Campus, City of Ilagan, Isabela Philippines. May I know if the BMW can treat chlorinated water? Is there a possibility that the good bacteria will be killed if I use chlorinated water? Thanks and more power.

    • July 30, 2013 at 10:08 am

      Not really sure what you are querying. Are you asking if BMW can remove chlorine from water? Or are you asking whether you can use chlorinated water in formulating BMW?

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