| Excellent quality | Good quality | Sufficient quality | Poor quality |
| Monitoring Point | River/Stream Estuary | Fish Farming | |||
| Marina | Moorage/Pier | Moored Boats | |||
| Industry | Sewage Pumping Station | Pipe | |||
| Onshore pipeline part of WWTP discharge outfall | Wastewater Treatment Plant (WWTP) | Uncontrolled landfill | |||
| WWTP discharge outfall | Sanitary landfill | Other |
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