Sewage Treatment Capacity Plan
| Plant | Initial COD | Initial Capacity (m3/d) | Expansion COD | Capacity After Expansion (m3/d) |
| Buraydah 2 | 2022 | 150,000 | – | 150,000 |
| Madinah 3 | 2023 | 200,000 | 2026 | 375,000 |
| Al Haer 2 | 2024 | 100,000 | 2027 | 200,000 |
| Tabuk 2 | 2023 | 90,000 | – | 90,000 |
| Khamis Mushait 2 | 2023 | 25,000 | 2027 | 50,000 |
| Riyadh East | 2024 | 50,000 | 2028 | 100,000 |
| Abu Arish 3 | 2024 | 25,000 | 2028 | 50,000 |
| South Najran | 2024 | 25,000 | 2028 | 50,000 |
| North Jeddah 1 | 2025 | 25,000 | 2029 | 50,000 |
| Hafar Al Batin | 2026 | 50,000 | 2030 | 75,000 |
| Total capacity (m3/d) | 1,865,000 | |||