A Sanitary District is a separate administrative and political unit of government from the state, city or town it resides within.
Refer to the following map if needed: Sanitary Sewer Districts
DuPage County Sanitary Service Map (Addresses can be searched in the upper right corner of link)

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Highland Hills Sanitary District Consolidation Information8 documents
- Highland Hills Sanitary District Consolidation Study
- Highland Hills Consolidation Presentation
- Highland Hills Resident Survey
- Highland Hills Resident Update Letter 12.21.2016
- Highland Hills Survey Results Letter 3.1.2017
- Highland Hills-Flagg Creek-DPC Agreement
- Highland Hill Sanitary District Dissolution Ordinance
- Highland Hill Sanitary District Board Meeting Agenda 7/10/2019