External OrganizationsMMSD stands for Milwaukee Metropolitan Sewer District _Update frequency: Datasets are refreshed every night to ensure the most current information is available. Even if there are no changes, the data will be updated nightly._mmsd-geographyengMilwaukee Open DataPublicMMSD GeographyDatasetsWisconsin--MilwaukeeWisconsinLast Modified: 2025-02-11