How to Build Aqueducts in Anno 117 Pax Romana

By Ambar Jimenez | 2025-11-17 09:45:52
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Aqueducts stand as one of the most iconic symbols of Roman ingenuity, and in Anno 117: Pax Romana, they are a crucial late-game infrastructure project. More complex than standard buildings, aqueducts require strategic planning and specific resources. This comprehensive guide will teach you everything you need to know about securing a clean water supply for your growing population.

How to Unlock the Aqueduct Blueprint

Before you can lay a single stone, you must first gain access to aqueduct technology. This milestone is achieved by advancing your society.
  • Reach the Eques Class: The key to unlocking aqueducts is upgrading a Plebeian Residence to an Eques Residence. This requires you to fully satisfy your Plebeian citizens by providing a consistent supply of all their needs, including Bread, Garum, Sandals, Soap, Sanctuaries, and Grammaticus education.
  • Secure Essential Resources: Around the same time you unlock the Eques class, you will gain access to Concrete. This material is the lifeblood of aqueduct construction. Ensure your production chain for Concrete is robust and efficient. You will also need steady supplies of Wood, Tiles, and Denarii (coin).

Building Your First Aqueduct System


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An aqueduct is not a single building but a network of three distinct components that must work in harmony.

  • The Aqueduct Source: This is the starting point of your system and must be placed on a special Mountain Slot on your island. Be mindful, as these valuable slots are also used forresource buildings like Limestone Quarries and Iron Mines. Plan yourisland's economy carefully to avoid conflicts.
  • The Aqueduct Channel: These are the connecting segments that carry water from the source toyour city. You can build long chains of these channels and even createbranching paths to reach multiple districts.
  • The Aqueduct Cistern: This is the endpoint where water is distributed. Placing a cistern provides a significant boost to Health and Fire Safety for all buildings within its radius. A single aqueduct line can supply multiple cisterns.
  • Crucial Building Tip: Gravity is Key. Water cannot flow uphill. Always plan your aqueduct route to runsteadily downhill from the Source to your Cisterns. Use the game’s Planning Mode (press V) to map the perfect, gravity-fed route without spending any resources.

    Advanced Aqueduct Strategies and Research

    Once your basic water system is operational, you can leverage it to boost your entire economy through the Discovery research tree.

    • Economic Boosts: Use your generated Knowledge to research powerful upgrades that connect your aqueducts to industry:

      • Duct Irrigation: Increases the productivity of farms near an Aqueduct Cistern.
      • Aqua Arborica: Provides a similar output boost to nearby plantations.
      • Hushing: Enhances the efficiency of mines supplied with water.
    • Managing Water Capacity: Every Aqueduct Source has a limited flow capacity, typically 100 units. Click on any aqueduct segment to open a management panel. Here, you can see which cisterns and boosted buildings are consuming water. If youreach the cap, you can manually turn off water to specific farms orplantations from this menu to prioritize essential services.
    • Verifying Boosted Buildings: Always double-check your production chains. Click on a farm orplantation to see a status indicator confirming it is receiving waterand enjoying the increased productivity bonus.

    By mastering the flow of water, you not only ensure the health of yourcitizens but also fuel the economic engine that will sustain your Romanempire in Anno 117: Pax Romana.

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