Water

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Water

TypeNatural resource
Crafted material
StateFluid
Transported byPipe [II•III]
Pickup•Truck
Haul Truck (Tank)
Stored inFluid Storage [II•III•IV]
Shipyard
Created inGroundwater Well
Rainwater Harvester
Thermal Desalinator
Used in

Water, specifically fresh water, is a vital natural resource in the game, extracted by pumping groundwater with a Groundwater Pump or collecting rainfall via a Rainwater Harvester in the early game. It’s essential early on for producing Concrete Slabs in the Concrete Mixer and refining Impure Copper in a Copper Electrolysis. From the mid-game onward, water becomes available through Groundwater Wells on the World Map and via Thermal Desalinators, fueling petrochemical production chains and steam power generation.

Excess water can be dumped into the ocean using a Liquid Dump, but this is rarely advisable due to its widespread use and the finite nature of groundwater reserves, which can deplete without rainfall.

Groundwater and Rainfall

Groundwater reserves are finite but regenerate slowly through rainfall. The replenishment rate depends on the reservoir’s capacity and the intensity of the rain. For example:

  • A 15,000-unit reservoir regenerates 14 units per day during normal rain (50% intensity) and 28 units per day during heavy rain (100% intensity).
  • A 12,000-unit reservoir regenerates 11 units per day in normal rain and 22 units per day in heavy rain.


The replenishment formula for groundwater is:

Daily Regeneration = (Reservoir Capacity × 0.00185) × Rain Intensity

Where:

  • 0.00185 is the base replenishment rate (0.185% of capacity per day).
  • Rain Intensity is 0.5 for normal rain and 1.0 for heavy rain (values are rounded to whole units).

For a 15,000-unit reservoir:

  • Normal rain: 15,000 × 0.00185 × 0.5 = 13.875 (rounds to 14 units).
  • Heavy rain: 15,000 × 0.00185 × 1.0 = 27.75 (rounds to 28 units).

A Rainwater Harvester collects water directly from rainfall, producing 0.5 units per day during normal rain and 1.0 unit per day during heavy rain.

A Farm collects water into its soil buffer, regenerating 3.0 units per day during normal rain and 6.0 units per day during heavy rain.

The replenishment formula for rainwater harvesters and farms is:

Daily Regeneration = Base Rate × Rain Intensity

Where:

  • Base Rate is 1.0 for a Rainwater Harvester and 6.0 for a Farm (assuming no yield multipliers).
  • Rain Intensity is 0.5 for normal rain and 1.0 for heavy rain.
  • Note: These rates assume the global rain yield multiplier is 100%. If modified (e.g., via research), the rates will scale accordingly.

Over a year, assuming 40 rainy days:

  • A 15,000-unit reservoir regenerates 560 units in normal rain (14 × 40) or 1,120 units in heavy rain (28 × 40).
  • A Rainwater Harvester yields 20 units in normal rain (0.5 × 40) or 40 units in heavy rain (1.0 × 40).
  • A Farm collects 120 units in normal rain (3.0 × 40) or 240 units in heavy rain (6.0 × 40).

The number of rainy days depends on the weather, which varies by difficulty and year. See the Weather page for details on weather patterns and their impact on water availability.

Strategic Notes

Groundwater depletion is a real risk without consistent rainfall. Players should monitor reserves and consider supplementing with Thermal Desalinators in dry climates. Rainwater harvesters and farms can help in rainy regions, but their output is limited compared to wells, making them less viable for large-scale water needs in the mid-to-late game.

Recipes

Production

:
10
60
1
6
10 
60 
6
36
4
24
2
12
Tier II
:
12
36
9
27
20 
60 
6
18
3
9
Tier II
:
14
28
12
24
30 
60 
12
24
1
2
Small
:
4
24
10 
60 
2
12
Small
:
4
24
10 
60 
2
12
Small
:
4
24
10 
60 
2
12
Large
:
16
96
10 
60 
12
72
Large
:
16
96
10 
60 
10
60
Large
:
16
96
10 
60 
12
72
Large
:
16
96
10 
60 
8
48
:
12
36
6
18
20 
60 
8
24
2
6
:
24
24
42
42
4080
4080
60 
60 
24
24
192
192
:
PROVIDES
8
48
/ 10 

/ 60 
:
PROVIDES
37
3.08
/ 720 

/ 60 
:
12
36
1
3
20 
60 
3
9
3
9
7
21
:
5
15
8
24
20 
60 
11
33
2
6
:
12
72
4
24
10 
60 
12
72
4
24
:
18
108
1
6
10 
60 
12
72
7
42
:
18
108
2
12
10 
60 
13
78
7
42
:
36
108
2
6
6
18
20 
60 
12
36
20
60
:
80
160
4
8
4
8
30 
60 
40
80
12
24
:
80
160
4
8
8
16
30 
60 
60
120
18
36

Consumption

Tier II
:
16
48
1
3
2
6
20 
60 
16
48
2
6
2
6
Tier II
:
24
72
1
3
2
6
20 
60 
16
48
2
6
2
6
Tier II
:
16
48
2
6
1
3
2
6
20 
60 
16
48
6
18
2
6
4
12
Tier II
:
16
48
1
3
2
6
20 
60 
16
48
2
6
2
6
Tier II
:
20
60
1
3
2
6
20 
60 
16
48
8
24
2
6
4
12
Tier II
:
16
48
2
6
1
3
2
6
20 
60 
16
48
6
18
2
6
4
12
Tier II
:
16
48
1
3
2
6
20 
60 
16
48
2
6
2
6
Tier II
:
32
96
8
24
1
3
2
6
20 
60 
24
72
12
36
2
6
16
48
Tier II
:
16
48
1
3
2
6
20 
60 
4
12
12
36
2
6
12
36
Tier II
:
16
48
1
3
2
6
20 
60 
16
48
2
6
2
6
:
8
16
4
8
30 
60 
12
24
:
8
48
5
30
10 
60 
8
48
10
60
:
8
48
8
48
10 
60 
8
48
6
36
:
8
48
12
72
10 
60 
8
48
6
36
:
8
48
12
72
10 
60 
8
48
6
36
:
2
12
10 
60 
2
12
:
2
12
10 
60 
2
12
:
4
24
10 
60 
4
24
:
8
48
6
36
10 
60 
8
48
15
90
:
8
48
7
42
10 
60 
8
48
15
90
:
8
48
9
54
10 
60 
8
48
12
72
:
8
48
9
54
10 
60 
8
48
12
72
:
8
48
9
54
10 
60 
8
48
12
72
:
8
48
12
72
10 
60 
8
48
12
72
:
8
48
12
72
10 
60 
8
48
6
36
:
15
15
18
18
60 
60 
7
7
10
10
Tier I
:
1
1.5
2
3
6
9
4
6
40 
60 
8
12
Tier I
:
1
1.5
2
3
6
9
4
6
40 
60 
8
12
Tier I
:
1
1.5
2
3
6
9
4
6
40 
60 
8
12
Tier I
:
1
1.5
2
3
6
9
4
6
40 
60 
8
12
Tier II
:
1
3
2
6
6
18
4
12
20 
60 
8
24
Tier II
:
1
3
2
6
6
18
4
12
20 
60 
8
24
Tier II
:
1
3
2
6
6
18
4
12
20 
60 
8
24
Tier II
:
1
3
2
6
6
18
4
12
20 
60 
8
24
Tier III
:
2
6
4
12
12
36
8
24
20 
60 
16
48
Tier III
:
2
6
4
12
12
36
8
24
20 
60 
16
48
Tier III
:
2
6
4
12
12
36
8
24
20 
60 
16
48
Tier III
:
2
6
4
12
12
36
8
24
20 
60 
16
48
Tier I
:
8
12
4
6
40 
60 
8
12
Tier II
:
8
24
4
12
20 
60 
8
24
Tier II
:
8
24
4
12
20 
60 
8
24
:
16
24
4
6
40 
60 
13
19.5
:
24
48
2
4
30 
60 
6
12
Tier I
:
1
2
30 
60 
4
8
2
4
Tier II
:
1
7.5
8 
60 
4
30
2
15
:
40
240
4
24
10 
60 
1
6
16
96
4
24
 
4
24
:
160
480
16
48
3
9
20 
60 
4
12
64
192
16
48
3
9
FBR
:
384
384
16
16
60 
60 
384
384
16
16
FBR
:
384
1536
16
64
1
4
15 
60 
384
1536
16
64
1
4
FBR
:
384
96
16
4
240 
60 
384
96
16
4
FBR
:
384
384
16
16
1
1
60 
60 
384
384
16
16
1
1
:
10
30
3
9
1
3
20 
60 
5
15
2
6
:
6
9
4
6
1
1.5
1
1.5
40 
60 
8
12
3
4.5
:
10
15
2
3
40 
60 
8
12
4
6
Tier I
:
94
31.33
15
5
180 
60 
45
15
Tier I
:
94
31.33
12
4
180 
60 
45
15
Tier I
:
94
31.33
30
10
180 
60 
45
15
Tier I
:
122
40.67
18
6
180 
60 
73
24.33
Tier I
:
122
40.67
14
4.67
180 
60 
73
24.33
Tier I
:
122
40.67
35
11.67
180 
60 
73
24.33
Tier I
:
122
30.5
20
5
240 
60 
31
7.75
Tier I
:
122
30.5
16
4
240 
60 
31
7.75
Tier I
:
122
30.5
40
10
240 
60 
31
7.75
Tier I
:
144
36
24
6
240 
60 
75
18.75
Tier I
:
144
36
19
4.75
240 
60 
75
18.75
Tier I
:
144
36
47
11.75
240 
60 
75
18.75
Tier I
:
162
40.5
34
8.5
240 
60 
28
7
Tier I
:
162
40.5
27
6.75
240 
60 
28
7
Tier I
:
162
40.5
67
16.75
240 
60 
28
7
Tier I
:
180
45
27
6.75
240 
60 
83
20.75
Tier I
:
180
45
22
5.5
240 
60 
83
20.75
Tier I
:
180
45
54
13.5
240 
60 
83
20.75
Tier I
:
203
50.75
34
8.5
240 
60 
30
7.5
Tier I
:
203
50.75
27
6.75
240 
60 
30
7.5
Tier I
:
203
50.75
67
16.75
240 
60 
30
7.5
Tier I
:
215
35.83
35
5.83
360 
60 
73
12.17
Tier I
:
215
35.83
28
4.67
360 
60 
73
12.17
Tier I
:
215
35.83
71
11.83
360 
60 
73
12.17
Tier I
:
359
44.88
40
5
480 
60 
100
12.5
Tier I
:
359
44.88
32
4
480 
60 
100
12.5
Tier I
:
359
44.88
81
10.13
480 
60 
100
12.5
Tier I
:
365
30.42
40
3.33
720 
60 
75
6.25
Tier I
:
365
30.42
32
2.67
720 
60 
75
6.25
Tier I
:
365
30.42
81
6.75
720 
60 
75
6.25
Tier I
:
486
54
76
8.44
540 
60 
248
27.56
Tier I
:
486
54
61
6.78
540 
60 
248
27.56
Tier I
:
486
54
152
16.89
540 
60 
248
27.56
Tier II
:
105
35
17
5.67
180 
60 
54
18
Tier II
:
105
35
13
4.33
180 
60 
54
18
Tier II
:
105
35
34
11.33
180 
60 
54
18
Tier II
:
135
33.75
22
5.5
240 
60 
38
9.5
Tier II
:
135
33.75
18
4.5
240 
60 
38
9.5
Tier II
:
135
33.75
45
11.25
240 
60 
38
9.5
Tier II
:
135
45
20
6.67
180 
60 
87
29
Tier II
:
135
45
16
5.33
180 
60 
87
29
Tier II
:
135
45
39
13
180 
60 
87
29
Tier II
:
161
40.25
26
6.5
240 
60 
90
22.5
Tier II
:
161
40.25
21
5.25
240 
60 
90
22.5
Tier II
:
161
40.25
53
13.25
240 
60 
90
22.5
Tier II
:
180
45
37
9.25
240 
60 
33
8.25


Items
Natural resources
Semi-processed materials
Crafted materials
Food and medical
Petrochemical
Power and nuclear
Waste and pollution
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