Water wells are conduits between the land surface and the ground water resource. If not sealed or plugged properly, abandoned wells can contribute to ground water contamination. Common surface pollutants including animal and human waste, herbicides, pesticides, and fertilizers can take the path of least resistance down an abandoned well and into an aquifer (water-bearing formation). Abandoned wells can also be a serious safety hazard, especially for children. The 1988 Indiana water well drilling statute (IC 25-39) requires abandoned wells to be sealed at the surface or plugged with impervious materials. This brochure addresses the most common questions about abandoned water wells. Specific requirements for sealing or plugging abandoned water wells are listed in the Indiana Administrative Code, 312 lAC 13, Rule 10.
Indiana Department of Natural Resources Divison of Water Publication 312 IAC 13-10
A water well is considered to be abandoned if:
A water well must be plugged within one year after it is abandoned. The Division of Water urges landowners who decide to discontinue use of their water wells to plug them immediately.
Landowners are responsible to make certain an abandoned water well on their property is properly sealed or plugged. How the well is sealed or plugged depends on when the well was abandoned.
However, the Division of Water recommends that all wells be plugged by a licensed driller.
Wells must be sealed at or above the ground surface with a welded, threaded, or mechanically attached watertight cap. The Division of Water recommends that the well also be completely filled with impervious grouting material as specified in 312 lAC 13. A well that poses a hazard to human health must be plugged with impervious grouting material.
Large-diameter hand-dug or bucketexcavated wells must be covered at the surface with a reinforced concrete slab or a treated wood cover protected by waterrepelling material such as roofing. The Division of Water recommends that the well also be completely filled with clean earth and impervious grouting materials as specified in 312 lAC 13.
Sealing or plugging a water well may be difficult. Before attempting the job, a landowner should contact the Division of Water, or read the Purdue University Cooperative Extension Water Quality publication “Plugging Abandoned Water Wells: A Landowner’s Guide” (WQ-21). This guide, written in cooperation with the Division of Water, is available online in PDF format from the Purdue Extension web site (http://.www.ces.purdue.edulextmedia/menu.htm). Search for it under Agricultural and Biological Engineering / Water Quality and Supply. WQ-21 gives step-by-step instructions on how to seal, disinfect, and plug abandoned water wells.
A water well that has not been used for more than three months, but is not abandoned, must be sealed at or above the land surface with a welded, threaded, or mechanically attached watertight cap.
Abandoned water well being plugged by a licensed water well driller.
Indiana Department of Natural ResourcesDivision of Water402 W. Washington Street, Room W264Indianapolis, Indiana 46204-2641
Phone: (317) 232-4160Toll Free: (877) 928-3755Fax: (317) 233-4579Email: wateUnquiry@dnr.IN.gov
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