| Subject | Counties Served |
| Sanitary Sewer Collection Systems | Calumet, Outagamie, Waupaca |
| Wastewater Treatment Plants | Calumet, Outagamie, Waupaca |
| WPDES Permits, Compliance Maintenance Annual Report (CMAR) | Calumet, Outagamie, Waupaca |
| WPDES Permits, Discharge Monitoring Reports | Calumet, Outagamie, Waupaca |
| WPDES Permits, Pulp and Paper Mills | Calumet, Outagamie, Waupaca |
| WPDES Permits, Water Quality Trading | Calumet, Outagamie, Waupaca |