Drinking Water Compliance OS

U.S. water systems

Wisconsin Water Systems

Wisconsin

1,833 community water systems on record — 1,022 active, 811 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 Wisconsin’s official records. Always confirm current status with Wisconsin before making decisions based on this information.

Counties in Wisconsin

All community water systems in Wisconsin