Hello!
I have been getting some black stuff in my hot water. It sometimes gets bad enough that the water in the sink gets covered with it, and it possibily could be "oily". When I drain the water heater the stuff comes out as well. There is no such stuff in my cold water. The water heater was replaced with a new one and after a while the problem is back.
Please advice.
Thanks in advance.
Regards,
Emil
Strange. I've not heard this complaint before. Oily is sometimes related to soft water but that would affect cold also. There is nothing in a water heater to dissolve and produce black oily. If it was from piping then it would be incoming cold piping to the heater. Is there any feature to your water distribution system that is unique?
I would take a water sample and get it analysized at your health department or a water conditioning store.
I would take a water sample and get it analysized at your health department or a water conditioning store.
Hi LonnythePlumber!
I say it is oily as the stuff floats, and thereafter "clings" to the side of the tub or sink. I have to use more than just water to wash it away. I had the stuff/pieces analysed when I had the problem in the old filter and main component that was found was manganese (I think) and that sort of suprised the person who did the analysis. He used some high-tech equipment that we have in the College. I have not been able get any pieces large enough in the new heater.
As far as I know there is nothing special about the water system.
Regards,
Emil
I say it is oily as the stuff floats, and thereafter "clings" to the side of the tub or sink. I have to use more than just water to wash it away. I had the stuff/pieces analysed when I had the problem in the old filter and main component that was found was manganese (I think) and that sort of suprised the person who did the analysis. He used some high-tech equipment that we have in the College. I have not been able get any pieces large enough in the new heater.
As far as I know there is nothing special about the water system.
Regards,
Emil
Maganesium certainly relates to the anode rod but I have not know a dissolving anode to leave black deposits. If it was the anode on the first heater then it is unlikely the new heater would immediately start doing the same thing. I don't think the analysis was comprehensive.
Hi LonnythePlubmer and Erik!
Thanks for the thoughts/suggestions. As the problem was not visible in the cold water supply, and it was visible inside the hot water heater (when I drain it), the only places that I could conclude that the problem was at was in the heater and the piping between the cold water pipe and the heater (about 2' of pipe and flexible hose). Therefore, I went ahead and replaced the flexible-hose that supplied the cold wate to the heater. Was unable to remove the hose which took the hot water out with the tools I had.
Thereafter, I sent an email to the LADWP (Los Angeles Dept. of Water and Power), and mentioned the problem, and I got the reply below. It sort of confirms my theory. I did go ahead and replaced the other hose as well.
Time will tell if the problem is solved. Thanks for your help.
Regards,
Emil
Emil,
The problem you describe may indicate a flex-hose problem. We have found
that some metallic flex-hoses have a black rubber-like lining on the
inside. The chlorine in the water deteriorates this lining over time
causing black particles to show up throughout the home. The black
particles will adhere to the side of sinks, tubs, etc. One
characteristic of this material is that it smears. The problem is more
severe on the hot water side. I would look at your plumbing connections,
if you find flex-hoses which appear metallic on the outside - check the
inside to make sure they're not black. If you have black (rubber) lined
flex-hoses, these should be replaced by "Chloramine resistant"
flex-hoses. If you have other questions or would like to speak with
someone in our office, please call us at (213) 367-3182 between the
hours of 07:30 a.m. and 04:00 p.m., Monday through Friday, except
Holidays.
Sincerely,
Nathan Aguayo
Thanks for the thoughts/suggestions. As the problem was not visible in the cold water supply, and it was visible inside the hot water heater (when I drain it), the only places that I could conclude that the problem was at was in the heater and the piping between the cold water pipe and the heater (about 2' of pipe and flexible hose). Therefore, I went ahead and replaced the flexible-hose that supplied the cold wate to the heater. Was unable to remove the hose which took the hot water out with the tools I had.
Thereafter, I sent an email to the LADWP (Los Angeles Dept. of Water and Power), and mentioned the problem, and I got the reply below. It sort of confirms my theory. I did go ahead and replaced the other hose as well.
Time will tell if the problem is solved. Thanks for your help.
Regards,
Emil
Emil,
The problem you describe may indicate a flex-hose problem. We have found
that some metallic flex-hoses have a black rubber-like lining on the
inside. The chlorine in the water deteriorates this lining over time
causing black particles to show up throughout the home. The black
particles will adhere to the side of sinks, tubs, etc. One
characteristic of this material is that it smears. The problem is more
severe on the hot water side. I would look at your plumbing connections,
if you find flex-hoses which appear metallic on the outside - check the
inside to make sure they're not black. If you have black (rubber) lined
flex-hoses, these should be replaced by "Chloramine resistant"
flex-hoses. If you have other questions or would like to speak with
someone in our office, please call us at (213) 367-3182 between the
hours of 07:30 a.m. and 04:00 p.m., Monday through Friday, except
Holidays.
Sincerely,
Nathan Aguayo