| Geomorphologic Unit/ Parameters | Coastal Alluvium, Mangrove and Freshwater Swamp-Port Harcourt Diobu | Saltwater Swamp-Isaka/ Dutch Island | WHO Standard | |||||||||
| WS1 | WS2 | WS3 | WS4 | WS5 | WS6 | WS7 | WS1 | WS2 | WS3 | |||
| Microbiological | Total Bacteria count cfU/ml | 2.4 × 104 | cfU/ml _ | |||||||||
| Total Coliform MPN/100ml | 160 | 0 | 0 | 0 | 8 | 0 MPN/100ml | ||||||
| E. coli MPN/100ml | 0 | 0 MPN/100ml | ||||||||||
| F. coli MPN/100ml | 18+ | 0 | 0 MPN/100ml | |||||||||