| Subject | Counties Served |
| Sanitary Sewer Collection Systems | Chippewa, Dunn, Eau Claire |
| Septage | Adams, Buffalo, Chippewa, Clark, Crawford, Dunn, Eau Claire, Jackson, Juneau, La Crosse, Marathon, Monroe, Pepin, Pierce, Portage, St. Croix, Trempealeau, Vernon, Wood |
| Wastewater Pretreatment Program | Adams, Buffalo, Chippewa, Clark, Crawford, Dunn, Eau Claire, Jackson, Juneau, La Crosse, Marathon, Monroe, Pepin, Pierce, Portage, St. Croix, Trempealeau, Vernon, Wood |
| Wastewater Treatment Plants | Chippewa, Dunn, Eau Claire |
| WPDES Permit Applications | Adams, Buffalo, Chippewa, Clark, Crawford, Dunn, Eau Claire, Jackson, Juneau, La Crosse, Marathon, Monroe, Pepin, Pierce, Portage, St. Croix, Trempealeau, Vernon, Wood |
| WPDES Permits, Compliance Maintenance Annual Report (CMAR) | Chippewa, Dunn, Eau Claire |
| WPDES Permits, Discharge Monitoring Reports | Chippewa, Dunn, Eau Claire |
| WPDES Permits, Land Application and Treatment | Adams, Buffalo, Chippewa, Clark, Crawford, Dunn, Eau Claire, Jackson, Juneau, La Crosse, Marathon, Monroe, Pepin, Pierce, Portage, St. Croix, Trempealeau, Vernon, Wood |
| WPDES Permits, Metal Finishing and Electroplating | Chippewa, Dunn, Eau Claire |
| WPDES Permits, Operation, Maintenance of Wastewater | Adams, Buffalo, Chippewa, Clark, Crawford, Dunn, Eau Claire, Jackson, Juneau, La Crosse, Marathon, Monroe, Pepin, Pierce, Portage, St. Croix, Trempealeau, Vernon, Wood |
| WPDES Permits, Operator Certification, Wastewater Treatment Plants | Chippewa, Dunn, Eau Claire |
| WPDES Permits, Phosphorus | Adams, Buffalo, Chippewa, Clark, Crawford, Dunn, Eau Claire, Jackson, Juneau, La Crosse, Marathon, Monroe, Pepin, Pierce, Portage, St. Croix, Trempealeau, Vernon, Wood |
| WPDES Permits, SWAMP Reports | Chippewa, Dunn, Eau Claire |