Service Call Reason: Received a call from NMG complaining about the performance of the water treatment system.
Visit Date: October 15, 2025
Lab Sample Dates: October 18, 2025 & November 10, 2025
Location: Security Forces Hospital – Makkah
Comparison of water samples against the required “Softened” water standard.
| Parameter | Unit of Measure | Standard (Softened) | Lab Result (RAW – 9 Nov) | Lab Result (Pre-RO – 15 Oct) | Lab Result (Soft – 9 Nov) |
|---|---|---|---|---|---|
| pH value | - | 6.5–8.5 | 6.59 | 6.68 | 7.05 |
| Hardness | mg/L | <10 | 50(FAIL) | 2 | 0 |
| Conductivity (@25) | µS | <500 | 396.1 | 433 | 396 |
| Chloride (Cl) | mg/L | <60 | 95(FAIL) | 115(FAIL) | 100(FAIL) |
| Iron | mg/L | <0.3 | 0.23 | 0.06 | 0.05 |
| Copper | mg/L | <0.1 | <0.001 | <0.001 | <0.001 |
| Silica (SiO₂) | mg/L | ≤2 | 0 | 0 | 0.5 |
| Phosphate (P₂O₂) | mg/L | <10 | 0.03 | 0.03 | 0.04 |
Comparison of DI/RO water samples against the required standard.
| Parameter | Unit of Measure | Standard (DI/RO) | Lab Result (W.CH.25.213 – 15 Oct) | Lab Result (W.CH.25.235 – 10 Nov) |
|---|---|---|---|---|
| pH value | - | 5–7.5 | 7.14 | 7.31 |
| Hardness | mg/L | 2 | 2 | 0 |
| Conductivity (@25) | µS | 5 | 51.6(FAIL) | 6.87(FAIL) |
| Chloride (Cl) | mg/L | ≤0.2 | 15(FAIL) | 1.72(FAIL) |
| Iron | mg/L | ≤0.1 | 0 | 0 |
| Copper | mg/L | ≤0.1 | <0.001 | <0.001 |
| Silica (SiO₂) | mg/L | ≤1 | 0 | 0.3 |
| Phosphate (P₂O₂) | mg/L | ≤0.5 | 0.05 | 0.02 |