An old water well does not always need to be replaced with a new one. In many cases, some of its performance can be restored through cleaning, maintenance or rehabilitation work.

Before making a decision, it is important to inspect the condition of the well, check the available flow rate and identify the cause of the problem.

Why Can an Old Well Lose Performance?

Over time, sediment and mineral deposits can accumulate, and different parts of the system may deteriorate. Problems with the pump or changes in the groundwater level may also occur.

The most common warning signs include:

• Less water than before.
• Loss of pressure.
• Sand or sediment in the water.
• Cloudy water.
• A pump that runs for longer periods.
• A well that has not been used for many years.

Loss of performance may be caused by sediment, mineral deposits, corrosion, sand being pumped into the system or problems with the pump itself, among other factors.

Can an Old Water Well Be Restored?

In many cases, yes. However, it is first necessary to determine why it has lost performance.

Depending on the condition of the system, the required work may include cleaning, sediment removal, inspection of the well casing, pump testing or rehabilitation of the inside of the well.

Physical cleaning and other rehabilitation methods can help restore performance when the water intake is obstructed or affected by accumulated deposits. However, the longer a necessary intervention is delayed, the more difficult or expensive the restoration may become.

When Is It Better to Drill a New Well?

Not all old wells can be restored.

A new borehole may be the better option when there is significant structural deterioration, the well provides insufficient flow, its original design no longer meets current needs or the cost of rehabilitation would be disproportionate to the expected results.

For this reason, it is advisable to inspect the existing well first before drilling a new one.

How Is an Old Well Inspected?

A professional inspection may include checking the well depth, water level, available flow rate, pump, pipes and the internal condition of the water intake.

In some cases, submersible cameras can also be used to detect obstructions, damage or other problems inside the well.

This information helps determine whether the best option is to clean or repair the well, replace the pump, rehabilitate the water intake or drill a new well.

Restoration of Old Wells in Barcelona and Catalonia

At Perforacions i Bombes Barcelona, we inspect, maintain and restore water wells in Barcelona and other areas across Catalonia.

Each well is assessed individually, taking into account its age, depth, condition, available flow rate and intended use.

Conclusion

An old well that has lost its flow is not necessarily beyond recovery. In many cases, a professional inspection and appropriate rehabilitation can significantly improve its performance.

Before investing in a new borehole, it is advisable to assess the actual condition of the existing well and determine which solution is the most technically and economically suitable.