Public Water Partners

U.S. water systems

Delaware Water Systems

Delaware

440 community water systems on record — 206 active, 234 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 August 1, 2026. This is a record-keeping and public-information tool — it does not replace Delaware’s official records. Always confirm current status with Delaware before making decisions based on this information.

Counties in Delaware

All community water systems in Delaware

Showing the 200 largest of 440 systems on record, by population served. Browse by county above for the full list — every system has its own page, and all of them are in the sitemap.