| Arrowhead Meadows Drainage District |
| Atherton Channel Drainage District |
| Baywood Park Drainage District |
| Campo Bello-University Park Drainage District |
| East Palo Alto Drainage District |
| Enchanted Hills Drainage District |
| Harbor Industrial Drainage District |
| Highlands Drainage District |
| Sequoia Drainage District |
| University Heights Drainage District |
| Bel Aire Lighting District |
| Pescadero Highway Lighting District |
| Ravenswood Highway Lighting District |
| Belmont Highway Lighting District |
| Colma Highway Lighting District |
| Emerald Lake Heights Highway Lighting District |
| Enchanted Hills Lighting Maintenance District |
| Granada Highway Lighting District |
| La Honda Lighting Maintenance District |
| Menlo Park Highway Lighting District |
| Montara Highway Lighting District |
| Bayshore Sanitary District |
| Burlingame Hills Sewer District |
| Crystal Springs County Sanitation District |
| Devonshire County Sanitation District |
| East Palo Alto Sanitary District |
| Edgewood Sewer Maintenance District |
| Emerald Lake Heights Sewer Maintenance District Zone 1 |
| Emerald Lake Heights Sewer Maintenance District Zone 2 |
| Fair Oaks Sewer District |
| Granada Sanitary District |
| Harbor Industrial Sewer District |
| Kensington Square Sewer District |
| Montara Sanitary District |
| North San Mateo County Sanitation District |
| Oak Knoll Sewer District |
|
| Scenic Heights County Sanitation District |
| West Bay Sanitary District |
| Brisbane Water Department |
| Burlingame Municipal Water Department |
| CA Water Service - Bear Gulch District |
| CA Water Service - Mid-Peninsula District |
| CA Water Service - South San Francisco District |
| Coastside County Water District |
| Daly City Municipal Water District |
| East Palo Alto County Water District |
| Estero Municipal Improvement District |
| Guadalupe Valley Municipal Improvement District |
| Hillsborough Municipal Water Department |
| Menlo Park Municipal Water Department |
| Mid-Peninsula Water District |
| Millbrae Municipal Water Department |
| North Coast County Water District |
| Redwood City Municipal Water Department |
| San Bruno Municipal Water Department |
| Westborough County Water District |
