Occasional black water

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    • #274274
      Avatar photoAnonymous

        Occasionally, I get a short burst of black water in either tub in the house. Any ideas as to the cause?


      • #289484
        Avatar photoSylvanLMP

          What kind of piping/ water supply do you have?

        • #289485
          Avatar photodaveroconn

            Please see this web site http://www.ianr.unl.edu/PUBS/water/g1280.htm Iron and manganese are chemically similar and cause similar problems. Iron is the most frequent of the two contaminants in water supplies it will cause the water to have a reddish tint. Manganese is typically found in iron-bearing water and will appear as dark or black tint in running water as you described. These problems are easily dealt with. Your first coarse of action would be to test your water to find out the concentrations of this contamination. You will want to confirm that this is your problem with the water test data. I would suggest calling a local water treatment professional to aid in your decision. Low to moderate levels of dissolved iron, at less than 5 mg/l concentrations, usually can be removed using an ion exchange water softener. Be sure to check the manufacturer’s maximum iron removal level recommendations before you purchase a unit. Capacities for treating dissolved iron typically can range from 1 to 5 mg/l. Oxidized iron or levels of dissolved iron exceeding the manufacturer’s recommendations will cause a softener to become plugged.

            High levels of dissolved or oxidized iron and manganese greater than 10 mg/l can be treated by chemical oxidation, using an oxidizing chemical such as chlorine, followed by a sand trap filter to remove the precipitated material. Iron or manganese also can be oxidized from the dissolved to solid form by adding potassium permanganate or hydrogen peroxide to untreated water. This treatment is particularly valuable when iron is combined with organic matter or when iron bacteria is present. I strongly recommend having a professional use the later of the two treatments. Potassium permanganate is dangerous to have around the house and should only be used by water treatment professionals.

            Respectfully David F. Walling

          • #289486
            Avatar photojhsmithiii

              City water, Copper pipe. Gas hot water heater. Haven’t tried draining the hot water heater yet. Been wondering if there was a build up of gunk in it.

              What ever it is, it is intermittent. It happens once every week or so and lasts for only a second. All other times, the water is fine.



              Originally posted by SylvanLMP:
              What kind of piping/ water supply do you have?

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