Drinking Water Compliance OS

U.S. water systems

Washington Water Systems

Washington

3,901 community water systems on record — 2,313 active, 1,588 inactive.

Every active community water system nationwide must produce a Consumer Confidence Report under the EPA's revised rule, effective for reports due July 1, 2027.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace Washington’s official records. Always confirm current status with Washington before making decisions based on this information.

Counties in Washington

All community water systems in Washington