Water contamination in Cities: Skylines are mainly brought on by sewage, and to a lesser extent, by industrial operations (or other contamination structures) located too close to water bodies. It is ideal for zoning industrial areas away from water bodies because prevention is always preferable to treatment. Moreover, some structures, such as coal power plants and garbage dumps, show sound pollution and waste pollution radius; if any bodies of water are located inside the waste pollutant radius, they will ultimately become polluted.
In Cities: Skylines, sewage is the primary source of water contamination, despite the fact that it is desirable to be smart with building location and industrial zoning. In the game, you usually utilize a water pumping station to extract water from a source, like a river, circulate it through your city using water pipelines, and then deposit it back into the water as sewage. The best strategy for this is one that the game makes very apparent from the get-go through tooltips and building descriptors: position your sewage outlets downstream from the water that your water intake is sucking up, or you’ll be providing your inhabitants tainted water. Unhealthy conditions and complaints are a natural result of polluted water supplies, and the value of nearby real estate also declines.
1. Proactively place your drain pipes
Your selections will be constrained by your financial situation and the rate of expansion of your city, unless you’re utilising mods that grant you access to infinite funds or fully unlocked advancement milestones that make every building available. As a result, you may easily relocate your water drain pipes to a new location if a certain body of water is becoming overly contaminated and you need to solve it without investing a lot of money. Construction of new buildings is more expensive than repositioning.
The body of water will eventually recover organically if the cause of the pollution is eliminated, as was already explained. Moving the drain pipes around will, of course, just move the pollution around, but it’s a good option if you’re short on cash or if you’re waiting for your city to expand to the point where you could invest in upgraded, eco-versions of drain pipes or treatment plants, as those are more effective at cutting waste in sewage.
2: USE WATER TREATMENT PLANTS
Similar to water drain pipes, water treatment plants reduce water pollution by a staggering 85%. It costs six times as much as a straightforward water drain pipe, requires more resources to operate, and is the first truly substantial solution to water pollution that becomes available until your city is designated a “Big City.” Nevertheless, if your city has a serious problem with water pollution, it is all worthwhile—at least until you unlock its environmentally friendly variant, as you’ll see next.
3: USE UPGRADED, ECO-FRIENDLY OPTIONS
You could invest in environmentally friendly modifications if you have the cash and the options are available. For instance, the eco water outlet generates less pollution than its standard, non-eco equivalent, the water drain pipes. It drains half as much space each week and costs almost twice as much to build. However, eco water outlets are instantly available, just like standard water drain pipes, so it’s a wise investment if you anticipate that water pollution may become a problem in the future.
The water treatment facility also has an eco-version that, in fact, flushes away 94% of the waste in sewage, but it is only accessible if your city develops into a “Capital City” and is also about 60% more expensive to construct. Even though it uses more than three times as much power as its non-eco equivalent, it is interestingly less expensive to maintain.
4: USE FLOATING GARBAGE COLLECTORS
Floating garbage collectors speed up the natural recovery process by filtering rubbish from the water. Although it is known as a floating garbage collector, its main purpose is to clean up water contamination.
For optimum impact, a group many of them together, but keep in mind that each unit costs 50,000 credits. You can move it to another polluted region once it has finished cleaning one up so it can continue to perform its magic there.
5: USE INLAND WATER TREATMENT PLANTS
The inland water treatment facility and its eco-version are both immediately available at the start of a game, as was previously indicated, thus you can avoid releasing sewage into bodies of water by employing them. Later phases offer models with stronger capabilities and more advancement.
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