Jaen Water District (JWD) was created by virtue of the local Sangguniang Bayan Resolution No. 17 dated February 17, 1987. It was granted by the Local Water Utilities Administration (LWUA) the CCC No. 290 on June 5, 1987.

As mandated by P.D. 198, the district’s main function is to acquire, install, improve, maintain, and operate water supply and distribution systems for domestic, industrial, municipal and agricultural uses for residents and land within the boundaries of the municipality of Jaen, Nueva Ecija.