Employer directory · District of Columbia

Public water systems in District of Columbia

3 public water systems in District of Columbia, 51st among the states. Community drinking-water systems owned by a local, state or federal government and serving 3,301 people or more, from EPA's Safe Drinking Water Information System. Private and tribal systems are not included.

Public water system	Population served
D.C. WATER AND SEWER AUTHORITY	632,323
JOINT BASE ANACOSTIA - BOLLING	19,312
NAVAL STATION WASHINGTON - WNY	16,800

Largest first by population served, as each employer reports it to its federal registry.

Source: U.S. Environmental Protection Agency, Safe Drinking Water Information System (SDWIS/Fed), community water systems. Data captured October 2, 2026.

Jobs at public water systems

Water / Wastewater Treatment Operator

More public employers

Other employers in District of Columbia

Fire departments Transit agencies School districts Police departments Public universities Public libraries

Public water systems in other states

All public water systems in the U.S. · District of Columbia government jobs