Pinellas County, Fla., is offering rebates to homeowners who build shallow wells for irrigation in an effort to conserve drinking water during one of the region's worst droughts. The wells, at 25 - 35 feet deep, will be an alternative to wasting drinking water for lawn maintenance by tapping unused unpotable water just below ground level. Pinellas and the Southwest Florida Water Management District previously tested the program, and customers saw their monthly consumption drop an average of 60 percent after they stopped irrigating with drinking water.