CITY OF LAFAYETTE. POSITION OPEN. GRADE III WASTEWATER MILLCREEK PLANT OPERATOR. The City of LaFayette is accepting applications for a full-time Grade III Wastewater Plant Operator. The City of LaFayette operates a Grade III, 1.0 MGD Wastewater Plant. The Successful candidate will need to possess a high school diploma or GED and an Alabama Grade III Wastewater Operator Certificate. The successful applicant is expected to maintain plant records, c...