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Arknights: Endfield

Tainted Waters Mission Guide

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Arknights Endfield - Tainted Waters

Tainted Waters is an Exploration Mission found in Wuling in Arknights: Endfield 1.0. Check out how to lower the water level with the control valve, how to set up the first and second devices, how to unlock this mission, its walkthrough, and all its rewards in this guide!

List of Contents

How to Unlock Tainted Waters

Complete The Way of Water Missions

Arknights Endfield - The Way of Water

You can unlock Tainted Waters after completing The Way of Water Chapter 2 - Process 2 quest line. Finish the final mission in the quest line to see the exploration mission in the map.

The Way of Water Main Mission Guide

Tainted Waters Walkthrough

Tainted Waters Quest Guide

  1. Speak to Jing Hong in Wuling City
  2. Talk to Li Heng
  3. Investigate the Canal Near Fangxing Avenue
  4. Lower the Water Level with the Control Valve
  5. Investigate the Strange Device
  6. Use the Water Level Control Valve Again
  7. Investigate the Second Device
  8. Investigate the Canal Near the Tianshi Bureau Academy
  9. Pick Up the Strange Device
  10. Hand the Device to Li Heng
  11. Lower the Water Level with the Control Valve
  12. Set Up the First Device
  13. Set Up the Second Device
  14. Leave This Place
  15. Talk to Li Heng
  16. Use the Water Level Control Valve

Speak to Jing Hong in Wuling City

Speak to Jing Hong in Wuling City

You can start the Tainted Waters mission by speaking to Jing Hong in Wuling City. He can be found south of Fangxing Avenue.

Talk to Li Heng

Talk to Li Heng

Go to Li Heng and talk to him nearby. He tells you to start with the canals under Fangxing Avenue and near the Tianshi Bureau Academy.

Investigate the Canal Near Fangxing Avenue

Investigate the Canal Near Fangxing Avenue

Head up the stairs behind Li Heng and turn right to reach the canal near Fangxing Avenue. You see that there might be something under the water.

Lower the Water Level with the Control Valve

Lower the Water Level with the Control Valve

Interact with the control valve to lower the water level. You see a device on a platform as the water recedes.

Investigate the Strange Device

Investigate the Strange Device

Head down the ramp to investigate the device. Jump on the lily pad and stand on the pressure switch to move the platform near the device. Jump back on the lily pads until you reach the device.

Use the Water Level Control Valve Again

Use the Water Level Control Valve Again

You need to check deeper levels of the area. Head back up the ramp and interact with the control valve to lower the water levels more.

Investigate the Second Device

Investigate the Second Device

There is another device as the water level lowers. Head down the ramp and jump on the lily pads to get to the device.

Investigate the Canal Near the Tianshi Bureau Academy

Investigate the Canal Near the Tianshi Bureau Academy

Head southwest of the Tianshi Bureau Academy to investigate the canal there. Interact with the control valve to lower the water levels.

Pick Up the Strange Device

Pick Up the Strange Device

To reach the device at the other side, step on the pressure switch until all five platforms make a diagonal path towards the device. Pick up the strange device and head back to Li Heng.

Hand the Device to Li Heng

Hand the Device to Li Heng

Go back to Li Heng to hand him the device. He finally believes that there is filth in the water and tells you that the canal near HS.Swords should be investigated as well.

Lower the Water Level with the Control Valve

Head to the Canal East of HS.Swords

At Li Heng's behest, head to the Canal East of HS. Swords and lower the water level with the control valve again by interacting with the nearby control mechanisms, similar with the ones you've encountered in Fangxing Avenue.

How to Lower the Water Level with the Control Valve

Lower the Water Level with the Control Valve
1
Lower the Water Level with the First Control Valve
You need to interact with two control valves. For the first valve, step on the pressure switch until a path is formed towards the valve. Interact with the valve to lower the water level.
2
Lower the Water Level with the Second Control Valve
Step on the next pressure switch to make a path towards the second control valve. Interact with the valve to further lower the water.

Set Up the First Device

Set Up the First Device

With the water level lowered, you must now set up Li Heng's devices at the canal. Complete the pressure switch puzzles to reach the area and set up the first device.

How to Set Up the First Device

How to Set Up the First Device
1
Raise the Platforms by Stepping on the Pressure Switch
Take the rope down to a lower platform. Step on the pressure switch to make a stair-like path with the platforms.
2 Head Up and Set Up the First Device
Jump up the platforms to reach the top. Set up the device at the top and proceed to go to the second location.

Set Up the Second Device

Set Up the Second Device

After the first device, head to the other side of the canal to set up the second device. Complete more pressure switch puzzles with crates to reach the setup area.

How to Set Up the Second Device

How to Set Up the Second Device
1
Place the Crate on the Pressure Switch
Head back and jump across the area with boxes near a pressure switch. Destroy the boxes and drop the hidden crate on top of the pressure switch.
2
Lower the Platform to Move Across
Ride the moving platform to reach the next area. Step on the pressure switch to lower a platform and reach the area for the second device.
3
Open the Door and Move the Crate on the Pressure Switch
Cross the platform and interact with the switch to open the door. Activate the crate and place on top of the previous pressure switch.
4 Head Up and Set Up the Second Device
Ride the platform to rise up to the second location. Set up the second device near the ledge.

Leave This Place

Leave This Place

Open the door behind you by interacting with the switch. Head inside to find an elevator. Ride the elevator out of the place and meet with Li Heng.

Talk to Li Heng

Talk to Li Heng

After taking the elevator up, talk to Li Heng who is just outside the place. He scans the area to find more prototypes in the canal.

Use the Water Level Control Valve

Use the Water Level Control Valve

Beside Li Heng, activate the control valve to raise the water level. Once the water levels are back to normal, the mission will be completed.

Tainted Waters Quest Rewards

Total Item Rewards

Oroberyl Oroberyl x50 T-Creds T-Creds x4050 Elementary Cognitive Carrier Elementary Cognitive Carrier x5
Protohedron Protohedron x1 Arms INSP Kit Arms INSP Kit x9 Operational EXP Operational EXP x200

Tainted Waters Quest Information

Tainted Waters Quest Details

Mission Type Exploration Mission
Location Wuling City, Wuling

Tainted Waters is a Exploration Mission that's located in Wuling City. This mission can be unlocked after completing The Way of Water quest series.

Arknights: Endfield Related Guides

Arknights Endfield Missions

List of All Missions

Mission Lists by Type

Mission Types in Arknights: Endfield
Main Missions Side Missions Exploration Missions
Operator Side Missions Commissions Daily Tasks

All Wuling Exploration Missions

Always Running Beyond the Worlds' Expanse III Beyond the Worlds' Expanse IV
Burdenbeast Tales Cliffside Riddles of Steel Comrades - Commemoration
Comrades - The Nameless Comrades: For Tomorrow Comrades: Remembrance
Divvy Up the Trouble Fan Meet Fissure Filling and Land Grouting
Innovate to Cultivate Long Night Breaking into Day No Margin for Error
OD Project - Remediation Station I OD Project - Remediation Station II OD Project - Remediation Station III
OD Project - Sky King Flats I OD Project - Sky King Flats II OD Project - Sky King Flats III
Old Acquaintance I Old Acquaintance II Pillars of Destiny
Silent Grove - Epilogue Silent Grove - South Hill Silent Grove - The Beginning
Silent Grove - Zhailing Islet Store by the Corner I Store by the Corner II
Store by the Corner III Tainted Waters Template Recovery
The Bell Tolls The Old Man and the Tide I The Old Man and the Tide II
Three Swords of Mastery Treasure Beneath the Pond

All Exploration Missions

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