Mom and dads septic drain field quit. Silted and plugged after 47 years. Got guy in to put new one in. Health dept inpector that laid out field had to see the old well. Its a crock well with 18" or so cement tile on end with a cement lid, I believe 37ft deep. He prefers it get plugged since it hasn't been used since 1983 and presents a hazard. I agree and septic digger will gladly do it. The house will be sold in the near future as they are in their 90's so it only makes sense. My dad always though of it as a "backup" if the city water failed, but it is salty and murky if drawn hard. A well presents a liability not an asset, right?