| Subject | Counties Served |
| Sanitary Sewer Collection Systems | Door, Kewaunee, Manitowoc |
| Wastewater Treatment Plants | Door, Kewaunee, Manitowoc |
| WPDES Permits, Compliance Maintenance Annual Report (CMAR) | Door, Kewaunee, Manitowoc |
| WPDES Permits, Discharge Monitoring Reports | Calumet, Manitowoc |
| WPDES Permits, Groundwater | Door, Kewaunee, Manitowoc |
| WPDES Permits, Land Application and Treatment | Door, Kewaunee, Manitowoc |
| WPDES Permits, Operation, Maintenance of Wastewater | Door, Kewaunee, Manitowoc |
| WPDES Permits, Operator Certification, Wastewater Treatment Plants | Door, Kewaunee, Manitowoc |