Test Pumping & Rehabilitation
Comprehensive testing to determine borehole yield and rehabilitation services to restore underperforming boreholes to optimal capacity.
Test Pumping Procedures
Step Test
Short-term test with increasing discharge rates to determine the optimal pumping rate.
- • 3-4 steps at increasing rates
- • Each step: 60-100 minutes
- • Measures drawdown vs. discharge
Constant Rate Test
24-hour continuous pumping at constant discharge to assess sustainable yield.
- • 24 hours continuous pumping
- • Water level monitoring
- • Determines long-term yield
Recovery Test
Measures water level recovery after pumping stops (up to 12 hours).
- • Post-pumping monitoring
- • Measures aquifer recovery
- • Up to 12 hours duration
Equipment Used
Test Pumps
Submersible pumps 1-40 m³/hr capacity
Flow Meters
Orifice, water meter, or V-notch weir
Water Level Loggers
Electric dipper and pressure transducers
Water Quality Kit
EC, pH, temperature, turbidity meters
Test Pumping Workflow
Install pump & instruments
3-4 increasing rates
24-hour test
12-hour monitoring
Data evaluation
WRMA format
Key Decision Point
After Step Test: Is the yield sustainable? If yes → proceed to Constant Rate Test. If no → borehole development may be required.
Setup
Install pump & instruments
Step Test
3-4 increasing rates
Constant Rate
24-hour test
Recovery
12-hour monitoring
Analysis
Data evaluation
Report
WRMA format
Water Quality Analysis
Comprehensive water sampling and laboratory analysis during constant rate test to ensure water meets drinking and usage standards.
Parameters Tested:
Testing Schedule
During Test
EC, pH, temperature every 30 min
24-Hour Sample
Full laboratory analysis
Laboratory Delivery
5L samples to certified lab
Borehole Rehabilitation
When is Rehabilitation Needed?
- •Reduced water yield over time
- •Increased sand content in water
- •Clogged or damaged screens
- •Chemical encrustation
- •Bacterial slime buildup
Rehabilitation Methods
- •Air Lifting: Compressed air to remove debris and sediment
- •Jetting: High-pressure water jetting to clean screens
- •Acidization: Chemical treatment to dissolve encrustation
- •Surging: Mechanical surging to break up formations
- •Bailing: Manual or mechanical removal of sediment
Test Your Borehole
Contact us for professional test pumping or rehabilitation services. We provide WRMA-compliant reports for all tests.
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