Open Access
Table 4
Shows the mean values of Muscat, Sohar, Al-Buraimi, and tap water tested parameters of three replicates samples, together with the Omani standard for comparison purpose.
| Parameters | Results: mean value of 3 samples of collecting drain-water | Tap Water, Omanian St. 8/2012 | ||||
|---|---|---|---|---|---|---|
|
|
|
|||||
| Muscat | Sohar | Al-Buraimi | Para. | Quality level | Max. | |
| Temperature: (°C) | 20.7 | 22 | 19.1 | 21.2 | 20–25 | – |
| Turbidity*: (NTU) Nephok True Unit | 0.57 | 0.94 | 2.1 | 0.4 | 1 | 5 |
| pH * | 7.01 | 6.9 | 7.01 | 8.44 | 6.5–8.5 | 9.0 |
| Electrical Conductivity: EC (µS/cm) | 25.29 | 40.44 | 45.68 | 312.39 | – | – |
| TDS* (Total Dissolved Solids) (mg/L) | 16.44 | 25.29 | 29.69 | 203 | 120–600 | 1000 |
| Chloride Cl− (mg/L)* | 6.17 | 3.7 | 4.68 | 153.68 | <250 | 600 |
| Phenolphthalein. Alkalinity (mg/L) | 0.0 | 0.0 | 0.0 | 2.8 | – | – |
| Total alkalinity (mg/L)* | 12.6 | 17 | 20.33 | 71 | – | – |
| Calcium hardness (mg/L) | 2.8 | 2.46 | 7.53 | 48 | – | – |
| Total Hardness (mg/L) | 4.13 | 3.33 | 7.8 | 86.8 | <200 | 500 |
| NO3 − (mg/L)* | 1.03 | 0.39 | 1.42 | 0.9 | – | 50 |
| PO4 2− (mg/L) | <0.06 | 0.063 | <0.06 | 0.06 | – | – |
| SO4 2− (mg/L)* | 2.47 | 1.73 | 5.82 | 8.83 | <250 | 400 |
| Na+ (mg/L)* | <0.02 | 1.7 | 0.38 | 0.9 | <200 | 400 |
| Fluoride F+ (mg/L)* | 0.058 | 0.03 | 0.03 | 0.7 | 0.6–0.8 Desalinated water | 1.5 |
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.