| Sample sites | Total coli form count | Differential E. coli count |
| Sabon Tasha (ST) | 63.0 | 2.0 |
| Narayi (NY) | 25.0 | ND |
| Karji (KJ) | 22.0 | ND |
| Barnawa (BW) | 35.0 | ND |
| Kakuri (KK) | 60.0 | 1.0 |
| Nasarawa (NS) | 11.0 | ND |
| Unguwar Rimi (UR) | 23.0 | ND |
| Malali (ML) | 30.0 | ND |
| Badarawa (BD) | 32.0 | ND |
| Mando (MD) | 20.0 | ND |
| Barkin Lahu (BL) | 25.0 | ND |
| Riga Chukwu (RC) | 18.0 | ND |
| WHO standard | 0 per 100 ml | 0 per 100 ml |
| NAFDAC standard | 10 per 100 ml | 0 |