Water and sewage

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This article may contain outdated information that is inaccurate for the current version of the game. It was last updated for 1.6.

The water and sewage info view. Water treatment plants are highlighted in green, and the area of effect of the pipes is shown in light blue

Your citizens and the city services need fresh water and a way to get rid of sewage to stay healthy and function properly.

The water network and the area covered by the piping (shaded in light blue) can be seen in the water info view. This info view will also colour-code buildings by whether they have adequate water supply or not, highlighting gaps in the city's network. It is possible to have multiple, unconnected water networks, each with their own pumps and outlets. However this is rarely an optimal strategy on the majority of maps.

If the water or sewage service is insufficient for demand, buildings furthest in the network from the supply will be the first to lose service. Buildings will only tolerate an inadequate water and/or sewage supply for a short time before becoming abandoned. Unlike most other service buildings, water buildings do not employ any citizens.

Water network[edit]

Supply[edit]

There are two types of water supply buildings: water towers and water pumping stations. Build these facilities to provide fresh water to your city. Water pumping stations must be built next to a water source, such as a river. It is a a good idea to take note of the water's direction of travel. You want to place your pumping station upstream so that it will not be contaminated by water pollution. Water towers may be built anywhere on land. You want to ensure there is no ground pollution near the water tower or your water supply will be contaminated.

Distribution[edit]

Once a water supply building is erected, water pipes must be placed to transport water to you city and back to the outlets. User-placed pipelines deal with both freshwater and sewage, there is no need to plan separate networks. Water pipes must be continuous and connect directly to the supply and drainage buildings, but otherwise buildings only need to be within an 11-cell radius of functioning pipes in order to be supplied.

Canals and Quays[edit]

Main article: Decoration#Canals_and_Quays

Canals and Quays are used to reshape the water around the city. In addition to larger bodies of water, ferries can also travel in canals, which contain "Ferry Pathways" by default.

Sewage disposal[edit]

See also: Pollution#Water pollution

Not only do your citizens need water, but they also need a way to deal with sewage. There are two buildings that can handle sewage: drain pipes and water treatment plants. Both facilities must be place on a water source and be connected to the water supply network. Drain pipes simply dump raw sewage into the water and can quickly cause massive amounts of water pollution. Water treatment plants process the sewage before dumping the water and can eliminate most of the pollution. It is a good idea to place sewage plants downstream of the water supply buildings to prevent accidental contamination of the water supply.

Constructions[edit]

Pipes[edit]

Water Pipe.png Water Pipes are constructable from the start of the game, and are built underground in linear stretches. They cost ₡20 per cell to build and ₡0.08/week to maintain. Networks of pipes need to be continuous in order to function. Water pipes do not get in the way of other underground constructions (i.e. road/metro/railway tunnels).

Service Buildings[edit]

Building Unlocked Cost
(₡)
Upkeep
(₡/week)
Pollution Noise
Pollution
Electricity
(KW)
Size
(cells)
Notes
Water Drain Pipe.png Water Drain Pipe Start 2,500 320 0 10 240 2×10 Drain capacity: 120,000 m3/week
Doesn't require road access
Must be placed on shoreline
Water Pumping Station.png Water Pumping Station Start 2,500 240 0 25 240 3×5 Pumping capacity: 120,000 m3/week
Doesn't require road access
Must be placed on shoreline
Water Tower.png Water Tower Start 3,500 240 0 25 240 2×2 Pumping capacity: 60,000 m3/week
Doesn't require road access
Must be placed on land
Water Treatment Plant.png Water Treatment Plant Big City 15,000 640 0 15 480 10×10 Drain capacity: 160,000 m3/week
Doesn't require road access
Must be placed on shoreline
Cs-nd-water fresh water outlet 70x57.png Fresh Water Outlet Tiny Town 2,500 320 0 10 240 1x3 Requires Natural Disasters DLC.
Drain capacity: 24,000 m3/week
Doesn't require road access
Cs-nd-water pumping service 93x79.png Pumping Service Busy Town 100,000 1,600 0 40 1,440 8x14 Requires Natural Disasters DLC.
Vacuum trucks suck up flood water, and empty at Pumping Service. Released through sewer system.
Storage capacity: 1,000,000 m3
Vehicle Capacity: 10
Cs-nd-water tank reservoir 105x77.png Tank Reservoir Boom Town 25,000 720 0 0 480 5x12 Requires Natural Disasters DLC.
Water tanks fill when there is excess production, and release water if production is low.
Storage capacity: 600,000 m3
Operating Rate: 120,000 m3/week

Heating systems[edit]

Heating was introduced to Cities: Skylines with the release of the Snowfall DLC. The citizens of a city will use heating to counteract the effects of the cold weather. The default approach is to increase the use of Electricity during a cold snap, however if municipal heating is available then it will be used instead. The heating system is integrated within the water system and pipes can be upgraded and downgraded between the two.

Heating Pipe.png Heating Pipes are constructable from Boom town onwards, and are built underground in linear stretches. They cost ₡100 per cell to build and ₡0.20/week to maintain. Networks of pipes need to be continuous in order to function. As with Water pipes, heating pipes do not get in the way of other underground constructions (tunnels, metros etc.).

Service Buildings[edit]

Building Unlocked Cost (₡) Upkeep (₡/week) Pollution Noise Pollution Electricity input (kW) Heating output (MW) Size (cells)
Boiler station.png Boiler station Boom Town 60,000 640 35 75 320 120 6×4
Geothermal heating plant.png Geothermal heating plant Boom Town 55,000 480 0 75 160 80 9×15