I live in Eastern NC, and have a 296' deep well with a 2hp submersible pump which has performed well for the past 6 years. Last week, my water began to look cloudy. It continued to worsen until the water was a dark gray. However, there was no obvious silt or sand in the water. I have sent off a sample for testing, and installed an in-line filter. The water has cleared some, but today, I have a significant drop in pressure, and it appears that my water heater may be back flowing onto my cold water side. Any help is appreciated!