We have a deep well (@ 200') and the well pipe is about an 6" PVC pipe. About a year or so ago, we started to notice a light brown-colored sediment in the toilets. We have an in-line filter so I started changing the filters more frequently which seemed to control the discoloration. Oh yes, we live at Lake Anna, VA and have a waterfront lot. I mention this because I thought perhaps the runoff from rains might be adding to the problem. We also have a lot of red clay. Now I'm changing the filter every month. My nephew was here so we talked about it. We took off the well cap and he lifted the pipe just slightly and we decided not to start the project as it was getting late. Just that little movement of the pipe inside is what caused the very reddish brown sediment. We did put a gal. of clorox down Just yesterday I noticed the toilet water was brown. It actually looked like someone forgot to flush. I changed the filter as it was almost due anyway and it seemed a little better for awhile but again today it is still very brownish and I don't want to use any of the water, even for coffee or cooking. I'm wondering what I should do. Do I call a plumber or get a zero reverse osmosis? Suggestions are very welcome.