A well pumping test is a crucial procedure used to understand the actual hydraulic behavior of a groundwater well. Through this test, we can determine the maximum flow rate the well can provide, how water moves within the aquifer, and the optimal point for installing the submersible pump.

During the pumping test, several key parameters are measured:

• Water table level

• Static water level (before pumping)

• Dynamic water level (during extraction)

These values are essential for understanding how the aquifer responds when water is extracted and for ensuring safe and efficient use of the well.

Conducting a professional pumping test before starting any pumping system is vital because it allows you to:

• Select the right submersible pump

• Adjust the actual working flow rate

• Prevent frequent pump starts and possible breakdowns

• Ensure a stable and efficient system

How Is a Well Pumping Test Performed?

To determine the real performance of a well, different techniques can be used depending on the characteristics of the groundwater source:

1. Variable-rate pumping tests

These tests assess how the aquifer responds to gradual increases in extraction.

2. Constant-rate pumping tests

Used to determine how much water the well can supply consistently and continuously.

3. Recovery tests

These measure how long the well takes to return to its natural level once the pump is stopped.

These tests are essential for proper pump sizing, optimizing energy consumption, and preventing overexploitation of the well.

When Should a Pumping Test Be Performed?

A pumping test is recommended in the following situations:

• After drilling a new well

• When replacing or installing a new pump

• If the flow rate or pressure has decreased

• When the well shows unusual behavior (noise, air, sudden drops…)

• Before increasing water demand (pool, irrigation, home expansion, etc.)