| Sample | Total coliform concentration (cfu/mL) | Contamination range | Green metallic sheen | Result |
| Stream | 1 < x < 10 | Low | - | Non-potable |
| River | >103 | High | + | Non-potable |
| Well water | <1 | No contamination | - | Potable |
| Well water | 10 < x < 103 | Medium | - | Non-potable |
| Well water | >103 | High | + | Non-potable |
| Stream | 1 < x < 10 | Low | - | Non-potable |
| Well water | 10 < x < 103 | Medium | + | Non-potable |
| Stream | >103 | High | - | Non-potable |
| Well water | 10 < x < 103 | Medium | + | Non-potable |
| Water pump | 10 < x < 103 | Medium | - | Non-potable |
| Stream | >103 | High | - | Non-potable |
| Well water | <1 | No contamination | - | Potable |
| Well water | >103 | High | - | Non-potable |
| Well water | >103 | High | + | Non-potable |
| Well water | 10 < x < 103 | Medium | - | Non-potable |
| Well water | 10 < x < 103 | Medium | - | Non-potable |
| Well water | >103 | High | + | Non-potable |
| Stream | 10 < x < 103 | Medium | - | Non-potable |
| Well water | 10 < x < 103 | Medium | + | Non-potable |
| Stream | 10 < x < 103 | Medium | - | Non-potable |
| Well water | 10 < x < 103 | Medium | - | Non-potable |
| Well water | 10 < x < 103 | Medium | + | Non-potable |