Many players spend multiple raids wandering through the area without success because the required item is tucked away inside a location that most people rarely visit. Between hostile ARC machines, enemy raiders, and the sheer size of the map, finding the sample can quickly become frustrating if you do not know exactly where to look. Having plenty of ARC Raiders Coins will be of great help to you.

Fortunately, once you know the route, the Water Troubles quest becomes much easier to complete. Here is everything you need to know about locating the Flood Access Tunnel, collecting the water sample, and safely extracting to finish the mission.

Starting the Water Troubles Quest

The Water Troubles quest is provided by Celeste, one of the vendors located in Speranza. She tasks you with gathering a contaminated water sample from the Dam Battlegrounds region so she can analyze it further.

Before entering the raid, it is important to prepare properly. Dam Battlegrounds is one of the larger and more dangerous maps in ARC Raiders, featuring open sightlines, elevation changes, and plenty of opportunities for ambushes from both players and ARC enemies.

Bringing a reliable mid-range weapon, healing supplies, and enough inventory space is recommended. Mobility tools such as ziplines can also make the journey significantly faster if you spawn far from the objective.

Where to Find the Flood Access Tunnel

The key to completing Water Troubles is locating the Flood Access Tunnel.
This hidden tunnel sits on the eastern side of the Dam Battlegrounds map, near the large red-colored lake. To reach it, players should travel east of the Control Tower and Research & Administration buildings.

If you are spawning from the western side of the map, expect a fairly long trek across the battlegrounds. As you move eastward, you will eventually overlook the Red Lakes area from a higher elevation point.

There are several ways to descend toward the lower section of the map:
Use the nearby staircases around the Control Tower area
Carefully move down the terrain slopes
Use a zipline for the fastest and safest descent

The zipline option is especially useful because it minimizes your exposure to cheap ARC Raiders Materials enemy players and hostile ARC units.