| Subject | Counties Served |
| Sanitary Sewer Collection Systems | Barron, Burnett, Polk |
| Wastewater - General | Barron, Burnett, Polk |
| Wastewater Pretreatment Program | Barron, Burnett, Polk |
| Wastewater Treatment Plants | Barron, Burnett, Polk |
| WET, Whole Effluent Toxicity, Testing | Barron, Burnett, Polk |
| WPDES Permits, Operation, Maintenance of Wastewater | Barron, Burnett, Polk |