One of my daughters nagged me to get my well water tested. It was tested years ago, was fine, so I forgot about it. She kept on my case about it and even dropped off a testing kit from the state lab. Finally, to shut her up, I sent samples to be tested.
The state sent me a quick reply that there was bacteria in the water and the well should be sterilized. I felt pretty silly about that. Went right out and bought a jug of bleach to do the job. Pumped out the well this morning and bleached the heck out of it. Ran bleach water through all the plumbing and let it set for the day. Added a filter for drinking water. It'll be days before all the bleach is flushed out of the system.
There's a lesson for me here. I shouldn't take something like that for granted. Doesn't matter that year after year the well tested fine. Sometimes things change. I used to sterilize the well every spring. Since the well always tested fine before, I got out of the habit. Also never liked the bleach smell that took a few days to clear.
Now it wasn't a serious problem. No one's been getting sick from it. However, it wasn't going to get better on it's own. What contaminated the well? I don't really know. It could be surface water from a heavy rain. That would be my guess.
From now on, I'm not going to take my well for granted. Spring bleaching and regular water testing is back on the schedule.