How to Fix Sewage Backup Cities Skylines

If sewage backup happens in Cities Skylines, the game will crash. This often results from incorrect water flow, so it’s essential to know how to fix sewage backup cities skylines and get your city back up and running. First, check your water flows and ensure they are all flowing in the right direction.

How to Fix Sewage Backup Cities Skylines

Next, increase your water pumps’ capacity if necessary. Finally, add more pipes if needed to ensure that all of your sewage is being properly processed. With these fixes in place, you should be able to keep your city running smoothly without any sewage backups causing problems! Read on to know more!

Summary: To fix sewage backup in Cities: Skylines, players must implement a range of strategies to address the issue. These include installing garbage disposal systems, optimizing waste management, rebuilding existing infrastructure, upgrading services, increasing green spaces, using zoning tools, expanding to the outskirts, utilizing water towers, purifying the city’s water supply, and employing sewage outlets. By combining these tactics, players can effectively manage their city’s sewage system, reduce the risk of backups, and maintain a clean and healthy urban environment.

10 Easy Ways on How to Fix Sewage Backup Cities Skylines

Cities: Skylines is a city-building simulation game that challenges players to create and manage the growth of a city, taking into account various aspects such as zoning, transportation, and utilities. One common issue faced by players is sewage backup, which occurs when the city’s sewage system is unable to handle the wastewater generated by the population. Sewage backup can lead to pollution, reduced land value, and a decrease in overall city happiness. The following guide provides an in-depth analysis of how to fix sewage backup in Cities: Skylines.

Assess the current sewage situation:

Before addressing the sewage backup issue, it is essential to understand the current state of your city’s sewage system. Check the “Water and Sewage” overlay in the game’s info panel to visualize the flow of sewage and identify areas with sewage problems.

Increase sewage treatment capacity:

The primary cause of sewage backup in Cities: Skylines is insufficient sewage treatment capacity. Ensure that your city has enough sewage treatment plants or water treatment plants to handle the wastewater generated by the population. The capacity of these facilities can be found in the game’s water and sewage panel, which also indicates the city’s sewage production.

To increase sewage treatment capacity, follow these steps:

a. Open the “Water and Sewage” menu in the game’s build panel.

b. Choose between a sewage treatment plant or a water treatment plant. Note that water treatment plants are more efficient and environmentally friendly but also more expensive.

c. Place the chosen facility near a water source, such as a river or lake, and connect it to the city’s water pipe network. Ensure that the outflow pipe is downstream from any water intake pipes to prevent contamination of the city’s water supply.

d. Monitor the sewage treatment capacity in the water and sewage panel to ensure it meets or exceeds the city’s sewage production.

Ensure proper pipe coverage:

Inadequate pipe coverage can lead to sewage backup if certain areas of the city are not connected to the sewage system. To fix this issue, follow these steps:

a. Open the “Water and Sewage” overlay in the game’s info panel to identify areas without pipe coverage.

b. In the build panel, select the “Water Pipe” tool and begin laying pipes to connect the unconnected areas to the sewage system.

c. Ensure that all buildings in the city are connected to the pipe network, as indicated by the blue highlights on the buildings when the “Water and Sewage” overlay is active.

Improve city layout and zoning:

An efficient city layout can help alleviate sewage backup by spreading the sewage production across multiple treatment facilities. Consider the following tips when designing your city layout and zoning:

a. Avoid concentrating high-density residential and industrial zones in one area, as this can create a high sewage output that overwhelms the sewage system.

b. Distribute sewage treatment facilities throughout the city to balance the load on the sewage system.

c. Create separate sewage treatment systems for different areas of the city to prevent a single point of failure in the sewage network.

Upgrade sewage treatment technology:

As your city grows, unlock and utilize advanced sewage treatment technologies to improve the efficiency and capacity of your sewage system. Some advanced options include:

a. Eco water treatment plants: These facilities are more efficient and environmentally friendly than standard water treatment plants, producing cleaner wastewater.

b. Green Cities DLC technologies: If you own the Green Cities DLC, you can access additional sewage treatment options, such as the “Eco Water Outlet” and the “Floating Garbage Collector.”

Manage city policies:

City policies can have a significant impact on sewage production and the efficiency of your sewage system. Consider implementing the following policies to help mitigate sewage backup:

a. Water usage policy: This policy reduces the overall water consumption of your city, which inturn reduces the amount of sewage produced. To enable this policy, open the “Policies” panel, select the “Services” tab, and check the box next to “Water Usage.”

b. Industrial space planning policy: This policy increases the efficiency of industrial buildings, which can help reduce the amount of sewage generated by industrial zones. To enable this policy, open the “Policies” panel, select the “City Planning” tab, and check the box next to “Industrial Space Planning.”

Optimize sewage treatment facilities placement:

The strategic placement of sewage treatment facilities can improve the efficiency of your sewage system and minimize the risk of sewage backup. Consider the following tips when placing sewage treatment facilities:

a. Place sewage treatment plants downstream from water pumping stations to prevent the contamination of the city’s water supply.

b. Avoid placing sewage treatment facilities near residential areas, as this can lead to pollution and reduced land value.

c. Locate sewage treatment plants close to industrial zones, as these areas typically produce a significant amount of wastewater.

Monitor population growth:

Rapid population growth can put a strain on your city’s sewage system, leading to sewage backup. Keep a close eye on population growth and ensure that your sewage treatment capacity keeps pace with the increasing demand. Periodically check the “Water and Sewage” panel to monitor sewage production and adjust your sewage treatment capacity accordingly.

Maintain and upgrade infrastructure:

Regular maintenance and upgrading of your city’s water and sewage infrastructure can help prevent sewage backup. Keep an eye on the condition of your water pipes and sewage treatment facilities, and replace or upgrade them as needed. Upgrading to larger water pipes can also help improve the flow of sewage and prevent backup.

Plan for future expansion:

As your city continues to grow, it is essential to plan for future expansion and anticipate the increased demand on your sewage system. Allocate space for additional sewage treatment facilities, and consider the future layout of your city when designing and expanding your pipe network.

By following these steps and taking a proactive approach to managing your city’s sewage system, you can effectively address and prevent sewage backup in Cities: Skylines. Implementing these strategies will lead to a cleaner, healthier, and more efficient city, ultimately improving the overall quality of life for your citizens.

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Some Helpful Tips for Sewer Backup Prevention

Here are some helpful tips on how to fix sewage backup cities skylines.

1. Underlying Issue: 

The underlying reason for sewage backup is that the pipes are either blocked or broken, and water has no way to flow through them. Therefore, if your sewage system gets backed up, there is a problem with the sewage pipe network. This could be from tree roots infiltrating the network and clogging the drains, cracks in the pipes, or even waste build-up over time.

2. Build-up inside Pipes

If you live in an area where your sewage system gets backed up frequently, there may be a reason why this happens more often than it should. Trees and plants are not the only cause of clogging; too many people on one street may be a big cause. If you build your city in such a way where sewer access is shared, the sewage system can only accommodate so many people’s waste before it gets backed up and overflows. 

3. There is no Easy Solution:

The best course of action if you live in an area prone to frequent sewage backups is to work with your neighbors on the street level. Try to get everyone’s input on how to solve this problem.

For example, maybe you can all agree not to use one part of the road for residential only, which will decrease the load on the sewage system and make it less likely to be clogged up. Of course, this may take some convincing, so if you have to, build civic buildings near the road where everyone can get together and hold a meeting. This way, they will be forced to do so by law.

4. Prevent the Problem from Escalating:

If you find yourself with a sewage backup, something has already gone wrong. So do your best to prevent the problem from worsening or happening again shortly.

Check out where exactly the sewage came from and what caused it. If there is a tree root nearby, remove it or cut it. Or, if the problem is further down the line, you may need to call someone who can fix it professionally, like a plumber.

Find Yourself With a Sewage Backup

7. Build Bigger Sewers:

If there are too many people living in one part of the city, you may need to build bigger sewers. This major project involves destroying buildings to widen the sewer network itself. It’s not an easy fix, but if you can swing it, go for it! It will help to resolve the problem and prevent it from happening again.

Five Common Causes of Sewage Backup

Skylines, sewage backup can cause several issues, including pollution, reduced land value, and decreased city happiness. Here are five common causes of sewage backup in the game:

  1. Insufficient sewage treatment capacity: One of the primary reasons for sewage backup is when the city’s sewage treatment capacity cannot handle the wastewater generated by the population. This occurs when there are not enough sewage treatment plants or water treatment plants to manage the amount of sewage produced.
  2. Inadequate pipe coverage: A lack of proper pipe coverage can lead to sewage backup if certain areas of the city are not connected to the sewage system. Buildings without connection to the water pipe network will not have their sewage transported to treatment facilities, leading to a buildup of wastewater.
  3. Rapid population growth: A sudden increase in population puts additional strain on the sewage system, which can result in sewage backup if the treatment capacity does not keep pace with the growth. As the population grows, so does the amount of wastewater generated, requiring more treatment facilities to handle the increased demand.
  4. Poor city layout and zoning: Inefficient city layout and zoning can contribute to sewage backup by concentrating sewage production in specific areas, overwhelming the sewage system. High-density residential and industrial zones clustered together can create an excessive sewage output that the existing treatment facilities cannot handle.
  5. Aging or damaged infrastructure: Over time, water pipes and sewage treatment facilities can become less efficient due to age or damage. If the infrastructure is not maintained or upgraded, the sewage system’s capacity to handle wastewater can decrease, leading to sewage backup.

Addressing these common causes of sewage backup in Cities: Skylines can help maintain a healthy and efficient sewage system, improving the overall quality of life for your city’s residents.

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Frequently Asked Questions

Why Is Garbage Piling Up In City Skylines?

Cities are constantly growing, and this growth can result in an increase in the garbage. Skylines is a new visualization tool that lets you see how different parts of your city change over time. This information can be used to anticipate future waste issues and make necessary adjustments to prevent them from happening.

By analyzing data from maps, surveys, public records, and other sources, Skylines has been able to map out the density of trash around the world’s major cities including Tokyo, London, New York City, Paris, and Sydney – all within close proximity of each other!

The projections show that by 2025 there will be more than 1 million metric tons (1 billion pounds) of municipal solid waste generated globally every day – which would be equivalent to up to 295 kilograms (646 pounds) per person carrying around their own garbage! If we continue on our current trajectory with no changes made then it is estimated that by 2050 there will be 3 billion metric tons (36 trillion pounds) of MSW – or enough material for 800 pyramid-shaped highrises reaching 589 meters (1 kilometer; 2 thousand feet) into the sky!!!

Skylines provide valuable insight into where rubbish is being created and help us realize where improvements need to happen so as not to exacerbate any existing trends.

Do Trees Help With Pollution Cities Skylines?

While there is no doubt that trees help to improve air quality, the extent to which they do so is still up for debate. Some experts believe that trees can reduce the amount of pollution emitted by a city by as much as 80%. However, other scientists say that while Trees may help to decrease local emissions, they have little effect on regional or global pollution levels. Ultimately, it becomes important to conduct your own research in order to make an informed decision about tree planting.

Where Do Sewage Cities Skylines Go?

Every day, cities produce millions of gallons of wastewater. And every day, those wastewater streams flow into rivers and other bodies of water.

As a result, many cities are struggling with the question of where to put their sewage – or, more accurately, where to put their biosolids (a by-product of wastewater treatment). Biosolids are a special type of fertilizer that can be used to help crops grow. But before biosolids can be used as fertilizer, they need to be processed and disposed of in a way that doesn’t pollute the environment.

There are a few ways that cities are handling their biosolids – some pile them on land, while others burn them or put them in a landfill. And although each option has its own benefits and drawbacks, the final decision will likely come down to cost, environmental impact, and public opinion.

Why Are All My Citizens Dying City Skylines?

Building a functioning city is hard enough as it is, without having to worry about your citizens dying from natural disasters. In Cities: Skylines, players are responsible for the well-being of their citizens and must make sure that they have access to necessary resources in order to survive during tumultuous times.

When disaster strikes, Citizens will scramble for supplies in hopes of weathering the storm. Resources like food and water become even more important when populations grow high due to limited space. When City Authorities are unable or unwilling to provide resources, Civil unrest might ensue as desperate Citizens turn on those who they deem responsible for their plight.

As you can see, keeping your city balanced and healthy takes a lot of work – not to mention strategy! Make sure that you’re always monitoring events happening around town and making smart decisions based on available data.


A sewage backup is a common problem in Cities Skylines. It can be caused by many factors, including blocked drains, broken pipes, and heavy rains. When sewage backups occur, they can cause damage to your property and create health hazards. However, there are several steps you can take to fix a sewage backup in your city. 

If the sewage backup is due to a blockage in the drainpipe, you can clear the blockage using a plunger or a snake. However, if the blockage is further down the line, you may need to call a plumber to clear it for you. We hope this blog post on how to fix sewage backup cities skylines have been helpful. Let us know your thoughts in the comments below!

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