|
| Hazard | Hazardous event | Likelihood avg (SD) | Severity avg (SD) | Risk level avg (SD) |
|
| Microbial | Low level of disinfection below the recommended limit | 3.77 (0.80) | 3.91 (0.85) | 15.35 (6.01) (very high risk) |
|
| Chemical and microbial | Excessive algal formations inside the tanker truck tank | 3.23 (1.07) | 3.43 (1.06) | 12.13 (7.27) (high risk) |
|
| Microbial | There is water leakage from the tanker reservoir or its pipes | 3.79 (0.83) | 2.85 (0.39) | 10.98 (3.24) (high risk) |
|
| Chemical, physical, and microbial | The tanker truck is unlicensed and nonmonitored by the Ministry of Health | 3.19 (0.86) | 2.76 (0.48) | 8.96 (3.31) (medium risk) |
|
| Chemical, physical, and microbial | The drainage tap at the bottom of the tank does not exist | 2.86 (1.16) | 2.35 (0.89) | 7.59 (4.58) (medium risk) |
|
| Chemical and microbial | Desalinated water is mixed with nondesalinated water | 2.35 (0.85) | 2.56 (1.06) | 6.87 (4.84) (medium risk) |
|
| Chemical, physical, and microbial | Presence of foreign objects inside of tanker truck tank | 2.10 (0.87) | 2.37 (1.08) | 5.82 (4.43) (low risk) |
|
| Microbial | Water discontinuity or stored for an extended period inside the tanker truck tank | 2.04 (0.85) | 2.09 (0.95) | 4.91 (3.97) (low risk) |
|
| Microbial | The parking garage of the tanker truck not sanitary | 2.24 (1.03) | 1.84 (0.86) | 4.87 (4.43) (low risk) |
|
| Chemical and microbial | The delivery nozzle, pump, or hoses are dirty or in poor condition | 2.00 (0.73) | 2.12 (0.72) | 4.70 (2.88) (low risk) |
|
| Chemical, physical, and microbial | The discharge pipes and hoses touch the ground | 2.20 (0.91) | 1.85 (0.82) | 4.69 (3.74) (low risk) |
|
| Chemical, physical, and microbial | The cap of the tanker truck tank is absent or partially opened | 1.60 (0.83) | 1.88 (1.14) | 3.90 (4.47) (low risk) |
|
| Chemical, physical, and microbial | The tanker truck engine exhaust and road contaminants affect the water quality | 1.62 (0.86) | 1.80 (1.05) | 3.75 (4.33) (low risk) |
|
| Chemical, physical, and microbial | The overflow pipe is unclean or without protective mesh | 1.68 (0.94) | 1.67 (0.85) | 3.47 (3.35) (low risk) |
|
| Chemical | The tanker truck desalinated water storage tank made of corrosive metal | 1.53 (1.12) | 1.49 (1.05) | 3.44 (5.26) (low risk) |
|
| Chemical and microbial | The tanker truck tank used to store other liquids other than desalinated water | 1.56 (0.65) | 1.31 (0.57) | 2.31 (2.07) (low risk) |
|
| Microbial | The tanker truck desalinated water storage tank made of opaque plastic | 1.20 (0.74) | 1.13 (0.50) | 1.72 (2.73) (low risk) |
|
| Chemical | A high level of overdosing of treatment chemicals (such as chlorine) | 1.08 (0.26) | 1.03 (0.17) | 1.14 (0.55) (low risk) |
|
