According to our records, this business is located at P.O. BOX 2135 in Los Banos (in Merced County), California 93635, the location GPS coordinates are: 37.0582786 (latitude), -120.8499151 (longitude). San Luis Improvement is categorized under Hydrologists (SIC code 4971). Known organization manager is David Coxey. You can contact the company by phone at (209) 826-4043.