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Mike R.
Mike R., Plumber
Category: Plumbing
Satisfied Customers: 2882
Experience:  20 years of plumbing experience, including high end homes and service work.
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We just installed a new hot water heater and now the water

Customer Question

Hi We just installed a new hot water heater and now the water is coming out black.
JA: How long has this been going on? And how severe is the problem?
Customer: It just happened. Our hot water heater died this morning, we changed it out and it wouldn't turn on, so we flushed the gas line and were waiting. One of our kids turned on the water and the water from the hot water only is black now there is black water coming out of the new hot water heater
JA: Do you plan on doing the work yourself?
Customer: Yes
JA: Anything else we should know to help you best?
Customer: no
Submitted: 9 months ago.
Category: Plumbing
Expert:  Mike R. replied 9 months ago.

Hi, I'm Mike and I have 20+ years of experience as a plumber. I'll be glad to assist you today.

Customer: replied 9 months ago.
Expert:  Mike R. replied 9 months ago.

The black water is from old seals in the valves. When the water is drained out it loosens a lot of the sediment from the old seals and buildup in the piping. Once you leave the water running for a while it will go back to normal.

Customer: replied 9 months ago.
Ok thank you
Expert:  Mike R. replied 9 months ago.

You could flush the lines and clear as much as you can. Typing directions for that now.....

Customer: replied 9 months ago.
That would be great, thank you
Expert:  Mike R. replied 9 months ago.

You would have to disconnect the water heater (hopefully you have flex lines connected to it) then connect the flex lines together and turn the valve for the water heater on. You will need a five gallon bucket and 3 gallons of vinegar and a submersible pump. You can get a pump for about $70 at Home Depot or Lowes. Disconnect the hoses from the back of the washing machine and fill the bucket with vinegar and water. hook one of the washer lines to the pump and direct the other into the bucket. Turn the water main off and open the washer valves then pump the water and vinegar solution into the plumbing system then it will go through the piping, cross over where the water heater lines are connected together and back into the bucket out of the other washer hose. Let it run like that for about 30 minutes. If the water comes out quite dirty then change the water and do it again until the water is clear.

Expert:  Mike R. replied 9 months ago.

Here is the type of pump you would need. click here

Expert:  Mike R. replied 9 months ago.

I also neglected to clarify the issue is actually not the water heater, just the old piping and valves.

Customer: replied 9 months ago.
great we will try this thank you!
Expert:  Mike R. replied 9 months ago.

You are very welcome.

Expert:  Mike R. replied 9 months ago.

I see you still have not positively rated my service. Although the only way that I get paid is when my service is positively rated, it also tells me that you have not received the information that you were seeking to find a solution to your issue. Will you let me know what affect the information I provided had on the issue at hand and how else I may be able to help? You can also comment or ask questions even after positively rating my service if something else comes up. I will always respond and I am happy to continue to help. Mike