Drinking Water Compliance OS

Washington

Whatcom County, Washington Water Systems

Whatcom County, Washington

177 community water systems on record — 102 active, 75 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.

Community water systems in Whatcom County, Washington