Module 5—Monitoring and Maintenance of Your Water Well........................................37
Water Level Measurements. ................................................................................................. 37
How to Measure Water Levels........................................................................................ 38
Interpreting Water Levels. ............................................................................................. 39
Water Quality Measurements............................................................................................... 43
Bacteriological Analysis.................................................................................................. 43
Chemical Analysis........................................................................................................... 43
Non-routine Testing........................................................................................................ 44
Sampling.......................................................................................................................... 44
Interpreting Results........................................................................................................ 44
Water Well Monitoring Log Worksheet................................................................................ 45
Module 6—Shock Chlorination..............................................................................................47
Signs of Nuisance Bacteria ................................................................................................... 48
Slime Growth................................................................................................................... 48
Rotten Egg Odour............................................................................................................ 48
Increased Staining Problems.......................................................................................... 48
Shock Chlorination Method................................................................................................... 49
Effectiveness of Shock Chlorination............................................................................... 49
Shock Chlorination Procedure for Drilled Wells. .......................................................... 50
Modified Procedure for Large Diameter Wells. ............................................................. 53
Calculating Water and Chlorine Requirements for Shock Chlorination Worksheet......... 54
Module 7—Troubleshooting Water Well Problems...........................................................55
Causes of Well Problems. ...................................................................................................... 55
Improper Well Design and Construction. ...................................................................... 56
Incomplete Well Development........................................................................................ 56
Borehole Stability Problems........................................................................................... 56
Mineral Incrustation....................................................................................................... 57
Biofouling......................................................................................................................... 57
Corrosion.......................................................................................................................... 57