0815415c____Code_of_Federal_Regulations__Requirement
[Well status] (1) Existing (operational or under construction by April 5, 2000) [Deadline] Within 1 year of the completion of your local source water assessment; your UIC Program Director may extend the closure deadline, but not the permit application deadline, for up to one year if the most efficient compliance option is connection to a sanitary sewer or installation of new treatment technology. [Requirement] 
(i) If your well is in a ground water protection area, you must close the well or obtain a permit
eCFR — Code of Federal Regulations
Requirement