| Subject | Counties Served |
| Approvals of Drinking Water Systems, Cities, Towns, Villages, Subdivisions, Sanitary Districts | Statewide |
| Approvals of Drinking Water Systems, Mobile Home Parks, Apartment Buildings, Condominiums | Statewide |
| Drinking Water Systems Design/Plan Review: City, Town, Village, Subdivision, Sanitary District | Statewide |
| Drinking Water Systems Design/Plan Review: Mobile Home Park, Apartment Building, Condominium | Statewide |
| Grants, Loans, Construction of Public Drinking Water Systems | Statewide |
| Municipal Plan Reviewer | Statewide |
| Security of Community Water Systems | Statewide |
| Watermain Extension, Status Check on Approval | Statewide |