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Registering an Existing Residential Well 
DWR > Ground Water > Well Permitting > Registering an Existing Residential Well

In order to register an existing well, the date that the well was constructed and put to beneficial use must first be determined.  Since January 1, 2009, all real estate transactions that include transfer of an unregistered / unpermitted residential well will require well registration.  Please see Guide to HB08-1014 and our Change of Ownership page for additional information.

Wells constructed and put to use prior to May 8, 1972

An application to register an existing well (form GWS-12) may be submitted for residential wells constructed and put to use prior to May 8, 1972 and continued to be used for those historical purposes established prior to May 8, 1972. A field inspection by a Colorado Division of Water Resources staff member may be required. Please contact the appropriate Division Office for the area where the well is located to request a field inspection.  

If your well location is inside of Water Divisions 1 (South Platte River Basin) or 2 (Arkansas River Basin) you must also complete Form No. GWS-12A, Statement of Historical Use, and submit it with this Form No. GWS-12.  If your well location is inside Water Divisions 3 (Rio Grande River Basin), 4 (Gunnison River Basin), 5 (Colorado River Basin), 6 (Yampa/White River Basins) or 7 (San Juan/Dolores River Basins), the existence and use of the well must be verified by field inspection prior to submitting this form.  To request an inspection, contact the appropriate Division Office.  Please note that Water Divisions 3 – 7 may also require the completion of the supporting Form No. GWS-12A

Wells constructed and put to use, or whose use changed or expanded after May 8, 1972

An application to permit an existing well (form GWS-44) may be submitted for residential wells constructed after May 8, 1972 or for those wells where the use has changed or expanded after May 8, 1972. These applications must be accompanied by a completed Existing Well Information and Inspection Form (GWS-68).

Information concerning related costs for permitting can be found here.

For further information, please call the Ground Water Information Desk from 9am-4pm M-F at (303) 866-3587 or submit your question via our online form to AskDWR.