Drinking Water Compliance OS

Maryland

Calvert County, Maryland Water Systems

Calvert County, Maryland

70 community water systems on record — 30 active, 40 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 Maryland’s official records. Always confirm current status with Maryland before making decisions based on this information.

Community water systems in Calvert County, Maryland