Well Inspections

The purpose of this annual inspection is to provide regular diagnostic tests for water wells and associated pumping equipment.

The diagnostic testing program is designed to test and document the operational performance of the following well-related components on an annual basis:

  • Sand and turbidity analysis
  • Well hydraulic performance
  • Pump condition and performance
  • Motor condition and performance

Sand and turbidity tests will be performed over a typical system start-up when sand and turbidity are normally at their highest levels.  This is useful in identifying wells where excessive sand production may create operational problems and also provides a baseline for future comparison. 

An evaluation of each well’s current hydraulic performance is done by first performing a variable rate drawdown test and then comparing this data with past performance.  Decreases in performance are often an indicator that a well may need to be rehabilitated.  

Pump performance testing first consists of comparing the existing pump performance characteristics with the factory indicated performance for each well.  From this information the energy efficiency of a pump can be quantified and can be used for future comparison.  Trends can often be identified that are useful for estimating when it is economical to replace a poorly performing pump. 

Motor testing includes on-line load testing and power consumption analysis.  Static tests are also performed using a Motor Circuit Analyser.  All these tests are useful in assessing the condition of a motor, and when several measurements are taken over time trends can often be identified.  This can be useful in predicting a potential motor failure or when it may become economic to replace an inefficient motor. 

The final component of this work is to assemble all the information into a final report.  This includes a brief narrative of the work preformed, tables, graphs, comparison with historical data, interpretation of the results and recommendations.   

 

1. Check Measure and Record Well Condition

  • Static level
  • Pumping level
  • Measure sand content and turbidity levels
  • Compare well performance against past performance

2. Check Pump Condition

  • Flow rate
  • Discharge pressure
  • Total dynamic head
  • Compare to new equipment performance 

3. Check Motor Condition

  • Motor current
  • Insulation resistance
  • Vibration
  • Compare to new equipment performance

All information will be collected by a MOE licensed well technician and evaluated by experienced water well professionals.  A brief report identifying deficiencies, if any, will be issued.