Esther's Well by Beth Kean

Love in the African bush. Esther’s Well, a BWWM Romance. 

Peter Ramsey, a British aid worker finds himself assigned to a special project far out in the Ugandan bush, a land trapped in the grasp of a crippling drought. Charged with managing a well drilling project he believes that he faces at most, 10 days of discomfort based in a rural village, but little does he know that the beautiful local girl assigned as his guide and translator may well change his life forever.