How long must a water well driller maintain copies of well log reports in their files?

Water well drillers are required to maintain copies of well log reports for a minimum of three years. This duration is established to ensure that adequate records are available for future reference, regulatory compliance, and potential follow-up by health officials or water resource managers. Retaining well logs for this period supports the management of groundwater resources by providing historical data on well construction and groundwater conditions. By having this information accessible, it helps in addressing any issues that may arise with the well or the surrounding water supply, thereby safeguarding public health and the environment.