Wao Water District was created by the Local Government Unit of Wao sometime in year 1991 to address the looming problems on its existing water system under the supervision of the Wao Municipal Waterworks System

Wao Water District was createdy the Local Government Unit of Wao sometime in year 1991 to address the looming problems on its existing water system under the supervision of the Wao Municipal Waterworks System. It was in 1993 thru Mayor Remedios G. Guiab that the Wao Water District was officially created thru the issuance of the Conditional Conformance Certificate No. 519 last May 26, 1993 by the Local Water Utilities Administration (LWUA).

With its official creation, the Wao Water District then availed a financial loan from LWUA amounting to 4.241M and a grant from Sen. Alberto Romulo amounting to 3M to start the construction of a new water system. The construction started in March of 1998 and was operational in January of 1999 serving four (4) barangays and 790 service connections covering 15% of the total barangays of the municipality of Wao.

In 2005, the Government of Japan thru JICA extended financial grant amounting to 5 million pesos for its physical improvement which increases its service area by 24% covering a total of nine (9) barangays and increased its service connections to 2,090. The JICA-LWUA Small Water District Improvement Project construction was officially undertaken in November of 2008 and was accomplished in February of 2009.