We bought a new manufactured home almost 2 yrs ago. When we first moved in we had issues with black water constantly. Since under home owners we called and they installed a new pump, holding tank, and drilled a line a few feet from where the old one was. We use a basic sediment filter no softner, not much smell or red tint. Sometimes when we change filter black sut particlas come out, we flush pipes and it ends.Well today, we changed filter and we have been flushing for 3 hours and it has cleared up a little but not much. Can anyone tell me if this is magnese? What to do/Is something broken?? Nver had a well before and first time home owner. Yes, there has been drought condtions. Other than that I dont have a clue, it was soo bad this time I went and started the washing machine after we changed the filter and it clogged the washing machine filter. We took the hose and ran it from the line inside to outside and still black stuff. Help?