The City of Lafayette is looking for greater water capacity, in case future growth requires it.
The city can pump 24 million gallons of water per day now, even though homes and businesses use only about 10 million.
Still, Lafayette is testing the water supply under the old Aretz Field, north of State Road 25 and Interstate 65.
The search for water at the old airport began a few years ago. In 2010, the city acquired 16 acres at the southeast corner of the property.