Quick facts
Best for
Sewage capacity
Placement priority
Paired with water expansion
Watch for
Backed-up sewage and stalled growth
Build cost
8,000
Upkeep
100/hr
Footprint
2x4
Effect
1,000 sewage, radius 15
Role in the city
Sewage treatment is the other half of the water cycle. Extra water without sewage capacity still blocks growth.
Placement advice
Keep it near the utility corridor and away from high-value homes. It supports growth but should not occupy premium land.
When to build or upgrade
Upgrade sewage whenever water supply expands or population growth starts pushing the system near capacity.
Related building guides
Buildings work together. Compare nearby utilities and services before deciding what to fund next.