The well water is clear so I assume it has to be between the well and the house. I was told their is no connections inline with the plastic piping .Maybe their is a crack in the pipe letting dirt in?
If it is a shallow well jet pump then you can get dirt in through a crack in the suction pipe.
If the piping is iron then you can have corrosion forming that continually breaks off and shows up in the water.
The water in the well may be clear where you sample it, but that may not be where the inlet is. Is it clear at the first point where the pump delivers the water?
Apparent clarity may be affected by how you observe it. If you take a sample in a large glass and hold it up to the light it will show more stuff than if you look down into it.
You will see color or colloidal material if you put some in a large white pan and compare the color to another white pan with no water.
I worked on a system last week that had a water softener with a stuck water meter that caused it not to regenerate. The water was very dirty because there was a lot of stuff in the resin bed. We dumped the resin into a large tub, washed it, treated it with Iron-out, and replaced it in the tank. The water was clear except for flakes of rust from the iron pipes that are still in the system between the softener and faucet.
