The bacterial quality should be checked every six months. The chemical quality should be checked every one to two years, or earlier if you notice any change, such as increased turbidity, staining, or hardness, or a change in taste or odor. The parameters to be analyzed are the same as those listed previously. Frequent testing checks the integrity of your well, lets you know if corrective measures are required, and warns you if another activity is having an impact on your well. Protecting your water source and water supply system must be your prime consideration.
Protection starts with proper location and construction of the well, followed by disinfection.
Chemical disinfection or chlorination is essential to ensure that your well, pump, and pipes are free from bacteria that can be introduced during well construction, pump installation, and well or pump repair. Disinfection is the final step after all defects in location and construction have been corrected. Followup samples should be collected for bacterial examination 1-2 weeks after disinfection, then 1 month after that sample, then twice a year for regular monitoring. Any time that the pump or lines are removed for any reason, or repair work is carried out on the well, it must be disinfected. Disinfection will kill only the bacteria present in the well or system.