Subterranean
Hero background: drone or crawler inside a sewer
For water companies

See inside the sewers you can't get a team into.

We survey hazardous, inaccessible sewers with drones and robotic crawlers, choosing the right tool for each asset, and scan them with LiDAR. Our drones fly past the obstacles that stop crawlers. You get the survey video you rely on today, with a full 3D model of the asset beside it.

Open a sample survey Propose a one-asset pilot

A survey, start to finish.

Deployment film · 60–90 s
Deployment film, 60–90 s: drone or crawler entry → live footage → defect in Halo → 3D measurement
4.5 years underground
467 drone flights
Working with Good Friday Robotics (GFR) ET (Environmental Techniques)
Stelios Award 2025
Surveys delivered for Uisce Éireann NI Water Scottish Water
In Halo

One survey, two views.

Survey video frame of a defect (same defect as the 3D view)
What you use today

Survey video and photos of the asset.

Halo point cloud of a pipe with a 3.30 m diameter measurement
What's new

A full LiDAR model of the same asset, with the footage lined up with the flight path of the drone. Measure the size of the pipe, including any deformations instead of estimating it from video.

Workflow fit

Builds on what you do today.

Same workflow. Better evidence for every decision.

Today
With Subterranean
Access
Manned entry or crawlers
Drones or crawlers, the right machine for the job
Condition data
Video, on a schematic that shows every sewer as a straight line
The same video, lined up to the asset’s true path in a full LiDAR model
Defect size
Estimated from footage
Measured in 3D
Sharing
Files and reports sent around by email or shared drives
Secure cloud sharing, with access set by each user’s role
Your tools
ArcGIS, CAD and WinCan
Survey files open in them directly
Try it

Open a sample survey in Halo.

Watch the footage, jump to a defect and measure it in 3D.

Open sample survey
[Link to a read-only demo survey, real data shared with permission]
Halo point cloud of a shaft and connecting sewer below street level
Who and where

Delivered with established partners across Ireland & the UK.

Surveys delivered for utilities and asset owners on both sides of the Irish Sea.

Good Friday Robotics (GFR)

[One line on the partnership, approved by GFR]

ET (Environmental Techniques)

[One line on the partnership, approved by ET]

RecognisedStelios Award 2025
FoundedDonegal, Feb 2024
Your objectives

How it meets your objectives.

01
Your objective · Safe, secure and reliable services

No one in the confined space.

Condition data on critical sewers without putting people in confined spaces.

Proof
“[Approved quote from Iain – fewer road closures]”
Scottish WaterIain Jones · Scottish Water
02
Your objective · Economic and efficient services

Fewer crews. Fewer return visits.

No man-entry or standby crew for the survey; fewer return visits because dimensions come from the 3D model. [Add one measured saving]

Proof
“[Approved quote from Mark – lower overall operating cost]”
NI WaterMark Mitchell · NI Water
03
Your objective · Better asset understanding

Data where there was none.

Condition data on assets that had none, and a baseline to compare against on the next survey.

Proof
In development

What we're building next.

Field trials [confirm]

Beyond line of sight

Flying where GPS and radio don't reach, around bends and junctions, with live video and control maintained throughout the network.

Trials [confirm]

Quadruped robots

Walking where crawlers can't drive and drones can't fly.

In development

DEFECT GRADING

Grades recorded against the footage and the 3D model, in one place.

Pilot partners help shape what we build next.

Propose a one-asset pilot
Pilot background: team at a manhole, drone launch, or Halo on screen
One-asset pilot

Start with one asset.

Send us the asset you can't get a team into.
We survey it and give your team the results in Halo.

01

You send

The location, access details and what you need to know about the asset.

02

We survey

A drone or crawler goes in. No one enters the sewer. Results in [weeks – confirm].

03

You decide

Survey video, photos, the 3D model and report in Halo. Choose the next step from the results.

Photo
Talk to [Name]
[Role]
Propose a one-asset pilot