| Subject | Counties Served |
| Sanitary Sewer Collection Systems | Price, Rusk, Sawyer, Taylor, Washburn |
| Wastewater Treatment Plants | Price, Rusk, Sawyer, Taylor, Washburn |
| WPDES Permits, Adaptive Management | Ashland, Barron, Bayfield, Burnett, Douglas, Florence, Forest, Iron, Langlade, Lincoln, Oneida, Polk, Price, Rusk, Sawyer, Taylor, Vilas, Washburn |
| WPDES Permits, Compliance Maintenance Annual Report (CMAR) | Price, Rusk, Sawyer, Taylor, Washburn |
| WPDES Permits, Discharge Monitoring Reports | Price, Rusk, Sawyer, Taylor, Washburn |
| WPDES Permits, Operation, Maintenance of Wastewater | Price, Rusk, Sawyer, Taylor, Washburn |
| WPDES Permits, Operator Certification, Wastewater Treatment Plants | Price, Rusk, Sawyer, Taylor, Washburn |
| WPDES Permits, Phosphorus | Ashland, Barron, Bayfield, Burnett, Douglas, Florence, Forest, Iron, Langlade, Lincoln, Oneida, Polk, Price, Rusk, Sawyer, Taylor, Vilas, Washburn |
| WPDES Permits, Water Quality Standards Variances | Price, Rusk, Sawyer, Taylor, Washburn |
| WPDES Permits, Water Quality Trading | Ashland, Barron, Bayfield, Burnett, Douglas, Florence, Forest, Iron, Langlade, Lincoln, Oneida, Polk, Price, Rusk, Sawyer, Taylor, Vilas, Washburn |