I finished setting up a hand pump on my old well. Now I have to find out where to test the water to see if it's safe. I live in a flood zone and there was a bit of dark water when I first tried the pump, but it cleared up after about 10 gallons.
We were told when we first moved out here with a well that we should pour a gallon of clorox bleach into the well and let it sit overnight. The next morning let the water run until it no longer smells of bleach. That was supposed to disinfect the well and the plumbing as well. We have been doing that annually just in case. I have Sawyer water filters that will remove any contaminants and make virtually any water safe to drink. Using a hand pump would fit right in with the filters.
You will get a little dirty water until your well settles in.
Blitsfike, we got the same advice from the Oklahoma DEQ office. We do it as well.
You still need to do a annual test for nitrates, etc especially if you life in an area with a lot of septic systems or around an area where a lot of livestock live.