Sewage
Content review required
This article has been deemed to require a review of it's content.
|

Water and Sewage are optional features and are only available when Water Management is enabled in game settings.
Background
Sewerage refers to the infrastructure that conveys sewage. It encompasses components such as receiving drains, manholes, pumping stations, storm overflows, and screening chambers of the sanitary sewer. Sewerage ends at the entry to a sewage treatment plant or at the point of discharge into the environment. In loose American English usage, the terms "sewerage" and "sewage" are sometimes used interchangeably.
Gameplay
When Water management is enabled in the game settings, the player's republic will begin to generate wastewater. Wastewater must be collected and disposed of. The disposal of wastewater is possible by dumping it in a river or lake or by exporting it to a customs house at a certain fee.
General
Wastewater disposal
Wastewater can be dumped in a river or lake with the help of a sewage discharge. The sewage discharge has three input connections to connect with sewage pipes of any size. Another option is to export the wastewater to a customs house. At the customs house, the player has to pay a fee for exporting.
Wastewater quality
The quality of the wastewater is influenced by the building where the wastewater is being produced. The lower the '% Sewage pollution', the less polluted the wastewater is.
Before the player disposes the wastewater into a river or lake, the player has the ability to treat the wastewater in a sewage treatment plant and turn it into polluted water. The player can control the quality of the water in the sewage treatment plant. In this plant, the wastewater is treated with chemicals to become polluted water, with a maximum water quality of 85%.
Distribution
Wastewater must be collected throughout the republic for buildings to function. This can be done through small, medium, big sewage pipes or with a sewage truck. Big sewage pipes can transport more wastewater over longer distances. Medium sewage pipes can transport less wastewater, and small sewage pipes transport the least. The player can join sewage pipes using sewage switches. Contrary to the name, sewage switches cannot switch on or off wastewater, and are only an interconnection between sewage pipes.
When using a sewage truck, the player must use a sewage loading/unloading station to handle wastewater and the sewage truck must be stationed at the technical services building. The sewage loading/unloading station has multiple sewage connections for pipes of any size.
Wastewater can be collected from buildings by using a sewage tank. The player can connect one sewage pipe, of any size, to a sewage tank. How far away a sewage tank can be placed from a building depends on the terrain height in the environment. If the sewage tank is at a lower height than the building, the distance increases. The larger the difference in height between sewage tank and building the more the distance is increased.
With help of a sewage pump the player can pump wastewater from a lower height to a higher height.
Each worker produces a little under 1 m3 of sewage per day.
How to connect sewage
The image below shows an example of how the player can interconnect sewage-related buildings. This is not a complete overview, but only shows how things can be connected. It is up to the player's imagination and needs to connect everything so as to get a properly working sewer system.

The sewage pumps are optional and the placement of sewage pumps is related to the terrain height in the world. The player places sewage pumps to pump sewer over a hill. When the player daisy chains sewage pumps, very high heights can be overcome, but this comes with high costs.
Notes
- Normal wastewater dynamics apply, meaning gravity-fed disposal works: the wastewater flows downhill, not uphill.
- The sewage pipes in the game require a proper slope due to normal wastewater dynamics.
Sewage treatment
A sewage treatment plant is a destination where wastewater (water which is no longer fit for its current purpose) moves to once it leaves buildings. The wastewater flows to the treatment plant for processing through sewage pipes, or is delivered by a sewage truck. Ultraviolet lamps are used; they emit UV light that destroys the DNA of bacteria. In addition, chemicals such as chlorine are used to destroy microorganisms.
| Name | Cost | Workers | Production | Consumption | Energy | Wattage | Storage | Structure | Notes | |
|---|---|---|---|---|---|---|---|---|---|---|
Sewage treatment small |
See below | 80m3 Wastewater 165m3 Water |
0.32t Chemicals | 11 MWh | 189 kW | 25m3 Wastewater(import) 25m3 Wastewater(export) 4.5t Chemicals |
Access | 1x road access 2x sewage pipes |
The desired water quality, after treatment, can be configured from the sewage treatment plant. The default and maximum setting is 85%, this means that water leaving the Water treatment plant is still polluted. When there are no workers at the sewage treatment plant, the plant stops processing wastewater; wastewater collects in the sewage pipes, they clog, and the citizens can get sick. | |
| L/U | 2 | |||||||||
Sewage treatment big |
See below | 220m3 Wastewater 440m3 Water |
0.60t Chemicals | 15 MWh | 264 kW | 50m3 Wastewater(import) 50m3 Wastewater(export) 6.0t Chemicals |
Access | 1x road access 4x sewage pipes(import) 6x sewage pipes(export) |
See Water treatment small. | |
| L/U | 3 | |||||||||
Sewage discharge
| Name | Cost | Workers | Energy | Wattage | Storage | Structure | Notes | |
|---|---|---|---|---|---|---|---|---|
Sewage discharge |
287 Workdays, 4.8t Concrete, 3.7t Gravel, 3.0t Asphalt, 4.2t Steel, 13t Bricks, 4.5t Boards, 0.54t Mechanical components |
None | 6,9 MWh | 114 kW | 10m3 Wastewater(import) | Access | 1x footpath access 3x sewage pipes(input) |
Sewage discharge is a structure that disposes wastewater quickly. It dumps sewage in a river or lake without requiring any type of treatment. The sewage discharge needs to be built partially on water and partially on soil. |
| L/U | None | |||||||
Sewage loading/unloading station
| Name | Cost | Workers | Energy | Wattage | Storage | Structure | Notes | |
|---|---|---|---|---|---|---|---|---|
Sewage loading/unloading station |
376 Workdays, 8.6t Concrete, 6.6t Gravel, 10t Bricks, |
None | 7,45 MWh | 124 kW | None | Access | 1x road access 2x sewage pipes(import) 2x sewage pipes(export) |
Wastewater can be delivered or picked up from the sewage loading/unloading station with the help of Sewage trucks. |
| L/U | 2 | |||||||
Sewage pump
| Name | Cost | Workers | Energy/Wattage | Storage | Structure | Notes | |
|---|---|---|---|---|---|---|---|
Sewage pump -5m |
33 Workdays, 4.4t Concrete, 0.12t Gravel, 1.3t Steel, |
None | Depends on usage. | 1.0m3 Wastewater(import) | Access | 1x footpath access 1x sewage pipes(input) 1x sewage pipes(output) |
With help of a sewage pump the player can pump Wastewater from a lower height to a higher height. |
| L/U | None | ||||||
Sewage pump -10m |
48 Workdays, 6.6t Concrete, 0.12t Gravel, 2.0t Steel, |
None | Depends on usage. | 1.0m3 Wastewater(import) | Access | 1x footpath access 1x sewage pipes(input) 1x sewage pipes(output) |
See Sewage pump -5m |
| L/U | None | ||||||
Sewage pump -15m |
70 Workdays, 10t Concrete, 0.13t Gravel, 3.0t Steel, |
None | Depends on usage. | 1.0m3 Wastewater(import) | Access | 1x footpath access 1x sewage pipes(input) 1x sewage pipes(output) |
See Sewage pump -5m |
| L/U | None | ||||||
Sewage switch
| Name | Cost | Workers | Energy | Wattage | Storage | Structure | Notes | |
|---|---|---|---|---|---|---|---|---|
Sewage switch |
17 Workdays, 3.0t Concrete, |
None | 0 MWh | 0 kW | 1.0m3 Wastewater(import) | Access | 1x footpath access 3x sewage pipes(input) 1x sewage pipes(output) |
The player can join sewage pipes using a sewage switch. Contrary to the name, sewage switches cannot switch on or off Wastewater, and are only an interconnection between sewage pipes. |
| L/U | None | |||||||
Sewage tank
| Name | Cost | Workers | Energy | Wattage | Storage | Structure | Notes | |
|---|---|---|---|---|---|---|---|---|
Sewage tank |
27 Workdays, 1.1t Concrete, 0.82t Gravel, 0.66t Asphalt, |
None | 0 MWh | 0 kW | 12m3 Wastewater(import) | Access | 1x footpath access 1x sewage pipes(output) |
A sewage tank is placed for the local collection of Wastewater from the surrounding buildings. How far away a sewage tank can be placed from a building depends on the terrain height in the environment. A sewage tank needs to be placed at the same height as a building, but it's better to place the sewage tank at a lower height. The larger the difference in height between sewage tank and building the more the distance is increased. If the sewage tank is at a higher height than the building, the sewage tank will NOT collect Wastewater. |
| L/U | None | |||||||
Sewage pipes
| Name | Cost | Throughput | Notes |
|---|---|---|---|
Sewage pipe small |
Workdays, Concrete, Gravel, Prefab panels, |
36,95m3 | |
Sewage pipe medium |
Workdays, Concrete, Gravel, Prefab panels, |
75,40m3 | |
Sewage pipe big |
Workdays, Concrete, Gravel, Prefab panels, |
169,65m3 |
Construction
- Sewage treatment small
| Requirements | |||
|---|---|---|---|
1431 Workdays 26t Asphalt 12t Bricks 4.2t Boards 80t Concrete 32t Gravel 32t Steel |
- Sewage treatment big
| Requirements | |||
|---|---|---|---|
3154 Workdays 51t Asphalt 33t Bricks 11t Boards 202t Concrete 63t Gravel 75t Steel |
Gallery
-
Water and sewage transport vehicles
-
Sewage discharge building


