If your private well is not working properly, a component of the well is broken, or it is potentially allowing contamination of the groundwater, it should be repaired or reconstructed.
Safety Hazard
There are many potential safety hazards that can come from wells with broken components or wells that are not up to today's code. A couple examples would be someone falling into the well, or contaminated surface water leaking into the well. Wells should be repaired or brought to code
whenever possible.