Water Supply; Sewerage
2017 Annual Survey of Philippine Business and Industry (ASPBI) - Water Supply, Sewerage, Waste Management and Remediation Activities Sector with Total Employment of 20 and Over : Preliminary Results
2015 Annual Survey of Philippine Business and Industry (ASPBI) - Water Supply; Sewerage, Waste Management and Remediation Activities All Establishments : Final Results
2010 Annual Survey of Philippine Business and Industry Water Supply; Sewerage, Waste Management and Remediation Activities Sector for Establishments with Total Employment of 20 and Over : Preliminary Results
