Browse Water Systems

Public Water Systems Database

Browse 433,347 EPA-regulated public water systems with identifiers, population served, and water source type. Use the filters below to narrow results by state, system type, or name.

All States (9,799) (2) (3,547) (1,865) (1) (3,970) (285) (4,334) (3) (20,002) (4,979) (10,863) (47) (1,344) (19,271) (5,256) (19) (153) (5,286) (4,372) (25,913) (9,875) (1,810) (2,214) (5,018) (3,786) (7,870) (5,884) (26,707) (21,717) (6,133) (200) (3,206) (4,721) (3) (23,898) (1,604) (2,762) (3,946) (14,873) (2,735) (1) (1,519) (24,696) (16,271) (5,027) (4) (6,016) (22,505) (2) (991) (2) (1,138) (4,556) (1,691) (6,152) (16,161) (2,325) (8,955) (829) (4,134) (10,030) (23,975) (4,244) (1,850) All Types (287,018) (96,913) (49,387) (26) (3) Filter