Sewers and Drainage
The construction of underground channels and pipes to carry away waste and stormwater, essential for public health in dense cities.
Core metadata
- ID: sewers_and_drainage
- Era: Ancient
- First known date: -2600 (century)
- Region: Indus Valley, Mesopotamia, and other early cities
- Review status: source_checked
- Maturity: established
Prerequisites
- Basic Geometry and Surveying (basic_geometry_and_surveying)
- Masonry (masonry)
- Urbanization (urbanization)
Dependents
- Civic Fire Brigades (civic_fire_brigades)
- Clay Pipe Drainage (clay_pipe_drainage)
- Flush Toilet with Trap Seal (flush_toilet_trap_seal)
- Latrines & Waste Pits (latrines_and_waste_pits)
- Public Bath Heating (public_bath_heating)
- Public Baths (Thermae) (public_baths_thermae)
- Aedile Urban Sanitation Oversight (public_health_inspections)
- Public Health Statistics (public_health_statistics)
- Public Hospitals & Infirmaries (public_hospitals_infirmaries)
- Public Latrines (public_latrines)
- Modern Public Sanitation (public_sanitation_modern)
- Sanitary Sewer Networks (sanitary_sewer_networks)
- Stormwater Drainage Systems (stormwater_drainage_systems)
- Urban Sewer Inspection (urban_sewer_inspection)
Fields
Field lanes
- Water & Sanitation Systems: Sanitation & Sewerage
- Civil Engineering & Built Environment: Water & Sanitation Infrastructure
Node sources
- Sewerage System (Encyclopaedia Britannica, 2026, textbook) • Supports: node, maturity
Prerequisite edge evidence
Edge/source evidence summary:
- Prerequisite edges: 3
- Average edge confidence: 70%
- Prerequisite sources: 3
- expert_inference: 3
| Prerequisite | Type | Confidence | Evidence level | Note | Sources |
|---|---|---|---|---|---|
| Urbanization (urbanization) | enabling | 68% | expert_inference | Urbanization provides a capability that enables this technology without being the only possible path. |
|
| Masonry (masonry) | enabling | 68% | expert_inference | Masonry provides a capability that enables this technology without being the only possible path. |
|
| Basic Geometry and Surveying (basic_geometry_and_surveying) | historical_predecessor | 75% | expert_inference | Basic Geometry and Surveying is an earlier historical predecessor or foundation, not a one-to-one engineering dependency. |
|
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