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Home » Reader question » Reader question: Yellow water from water tank in Thailand, what can I do about it?
Dear readers,
We do not have water from the government, but a 1000 liter tank. The water is pumped up. However, the water, especially in the toilets, is yellowish in color.
Can anything be done about that? Either with something in the water tank, or in the toilet bowl? Obviously we don't drink the water.
Yours faithfully,
Henk
Dear Henk,
Then you should first check from what depth the water comes from and what the subsoil is, if the water comes through a yellow rock or clay layer, for example, then it takes on that color, we ourselves have reddish water, it is due to a layer of red rock.
You can have the water tested to see if it poses a health hazard, but you don't use it as drinking water, but you do use it to brush your teeth and shower, by the way??? because then it has to be filtered.
If at some point the yellowish water also starts yellowing your plumbing (and your laundry), you could consider a filter installation, but first you have to find out the cause of the color and you will most likely find it in the soil.
Yours faithfully,
Lex K.
I had almost the same problem but with brownish water. That water cost all my faucets because it was sand. A filter installation helped a lot. There is a second filter for drinking water. I have extensively tested the drinking water. It's definitely very, very good right now.
My well hit 23 meters deep, it wanted to go to 30 meters but broke 2 drills on a hard rock. I told him to stop.
We now have beautiful AAA+++ water.
Aside. It is recommended to brush your teeth with safe drinking water.
Tiny wounds are created during brushing, through which bacteria and viruses can enter or infect. Furthermore, some parasites also enter this way.
Is there a possibility to collect rainwater, maybe an option to fill your tank.
Yellow-brown water can be caused by too much iron in the groundwater. The water turns yellow-brown when it comes into contact with oxygen. You can test this by putting groundwater in a bottle and shaking it; the water then turns yellow after a few seconds. You could consider installing a resin and carbon filter separately. Good luck!
well with a little chlorine in a bottle otherwise not much will happen, especially in a few minutes if you aim at oxidation
The question is, is it pumping from a well, a deep artesian one? Or from a ditch or shallow well somewhere?
I had a well drilled myself, 27 meters deep, the last 18 meters in granite. That gives a series of problems, such as dissolved solids, especially calcium and iron. Iron in ion form combines with oxygen and forms ferric , later ferrous oxides that remain very fine in the water and give a yellow-orange color.
Even if you send this into the house without treatment, the FE+ with Cl- can give ferric chloride and then the washing becomes cream, rings in the toilet bowl and a lot of drying stains
Give me a little more detail and I may be able to help you with some advice
We had a well dug, with a diameter of one meter. Concrete rings have been placed in it. I estimate they went about 8 meters deep. Next to the house we have an extra pump, which ensures that the water pressure in the house is good.
A deep well drilling would have been better. Now you may have organic contaminants. How is the sewer discharged, not close to the well?
You can get solids out through filtration, but not solutes and bacteria, and that's the problem.
With chlorine dosing it will be good as far as bacteria are concerned but CL- is the plague for your RO unit and the C bed for it is quickly exhausted after which the an-ion polisher dies
I have a question where you can get water tested near Udon-thani
Water from a deep well ('deep well water') often has a lot of iron and calcium that colors the water yellow to red, depending on the concentrations. Sand dust may also come with it. In that case the water is cloudy. In exceptional cases, arsenic (some locations in Isaan) and heavy metals (eg mercury and lead) also surface. Filters are recommended; go to the local filter farmer who is certainly there in the capital of your province. He can also test the water to see which filter(s) is (are) needed. A backwashed microfiber filter, with or without a resin filter (that material needs to be replaced from time to time), should be up to the job. Cost 15,000-25,000 Baht. To keep an eye on the basic quality, I recommend buying a TDS meter (1,000-2,000 Baht; measures the Total Dissolved Solids = minerals, but does not measure organic substances such as bacteria).
For drinking water I recommend a separate filter. Every TESCO, Big C, HomePro has these devices in all kinds of designs and price ranges. The most convenient is a device that you can connect directly to the kitchen faucet (via the nozzle of the faucet). For the taste, such a drinking water filter should also have a 'post-carbon' filter. Reverse Osmosis systems are absolutely safe for drinking water, but maintenance is quite expensive because you have to replace one or more filters every few months ('backwash' used to be possible, but not anymore). Ask for a system that doesn't need much replacement. Eg. a Stiebel Eltron system (a good one costs approx. 8,000 Baht).
Agree with most, but my RO system, now 5 years old, still runs on the same diaphragm with 4 ppm exhaust 165 ppm inlet. Carbon and 1 micron filter every 6 months, but that's not expensive
That's great, Marcus! Which make is that? A TDS value of 165 ppm is quite low. I'm afraid that Henk's yellow water will be quite a bit higher, which means that the membrane & filter will have to be replaced sooner. An RO filter provides guaranteed safe drinking water at all times. So safe that some experts advise against it because it (also) removes all useful minerals from the water, but you do get those minerals with your normal food, especially from vegetables.
I do many (charitable) water filter projects, especially for schools, and have over 10 years of experience with RO and other methods. RO is still the best solution for households, but not for schools because of the costs on the one hand and the high percentage of 'reject water' on the other (= water that keeps the RO membrane under pressure, but is not filtered; it is therefore 'waste water') . This can rise to about 70% and that is no longer acceptable for large parts of Thailand that are experiencing an increasing shortage of water. RO (special, very expensive filters) is used on a very large scale for desalination of seawater in eg the Middle East.
If Henk wants guaranteed safe drinking and kitchen water, RO is really the best solution for him. For other applications (eg shower, toilet, washing, basic water for the RO filter) a second filter is desirable, for example a microfiber system with (whether or not automatic) backwash. These are not expensive nowadays. A water test will have to show whether other filters (eg resin) are needed.
Moderator: English and Dutch mixed up. Can't understand
Forgot, take a look at OXFAM and biological iron removal. If you want to know anything about that, just ask. I have commissioned and operated on very large ones (3000m3 per hour) in Nigeria. This is ideal for poor villages because this can be done with limited resources, a few thousand baht. Also look at the WHO (WORLD HEALT ORG) for the potable water specs. Too much iron in water is not good. Iron is a catalytic agent and it is said that if you take too much iron you will age faster