EL −12.0 / Subsurface

Keep critical water infrastructure online.

More than 25 years and over 8,000 reservoir inspections and cleans: cleaning, inspecting, finding leaks and repairing reservoirs and tanks, often without taking them out of service.

Cleaning & sediment removal

Clean tanks, clean water, no shutdown.

A clean is more than sediment removal. It is a scheduled health check for the asset, because a diver on the floor sees everything: coatings, joints, fittings, corrosion and the defects that matter.

Sediment harbours micro-organisms, consumes disinfectant and clouds water quality. Our dive teams vacuum sediment and clean floors, walls and internals while the reservoir stays full and in service, with strict diver disinfection protocols protecting the potable supply throughout.

  • Diver cleaning with the asset online, where operationally appropriate
  • Sediment vacuuming and controlled discharge management
  • Reduced downtime, water loss and operational interruption
  • Photographic record of before and after condition

Field guides: Reservoir Cleaning 101 · Tank Cleaning Intervals 101 · Diver Disinfection 101

Commercial diver vacuuming sediment from the floor of a potable water reservoir by torchlight
Sediment vacuuming, reservoir online throughout
Inspection & leak detection

Find the problem before it finds you.

FIG 01 / DIAGNOSTICS
D1

Leak detection & repair

Camera-based and diver-led leak detection locates loss paths without draining the asset, followed by underwater repair using potable-approved materials and methods.

See a leak detection project
D2

Internal & external inspection

Structured condition inspections of floors, walls, roofs, coatings, ladders, pipework and fittings, rated, photographed and reported for asset planning.

How we structure findings
D3

ROV inspection

Remotely operated vehicles inspect assets where diver entry is impractical or unnecessary, giving fast coverage and detailed inspection findings.

Explore inspection options
Fire water storage tank inspected and maintained without draining
Fire tank servicing, no draining required
Fire tanks

Fire tanks, serviced full.

Internal and external fire tank inspection, cleaning, maintenance and reporting, with photographic evidence, all without draining the tank. Your fire protection stays available for the entire job.

  • Compliance-ready inspection reports with imagery
  • Sediment removal and internal cleaning while full
  • Repairs and fit-out coordinated with site fire systems
Repairs & internal works

Repaired in place, backed by evidence.

Internal repairs, post and fitting replacement, bird proofing, sealing and coating touch-ups, delivered by dive teams working to AS 2815 and AS 2865, and documented in the asset record.

See maintenance projects
Diver carrying out coating repairs on a reservoir floor under torchlight, with repair material at hand
Coating repair, completed in place underwater
Contamination prevention

Protecting the water comes first.

Your reservoir stays in service while we work, so every process is built around protecting water quality. Equipment is dedicated to potable water, disinfected before mobilisation and transported enclosed. On site, nothing that enters the water touches the ground, and everything is accounted for before the asset is closed.

Aqualift

These controls are part of The Aqualift System, our documented potable water methodology.

On every job
  • Dedicated potable water equipment only
  • Disinfection before every mobilisation
  • Enclosed transport, purpose-built dive truck
  • Hygienic dry suits and full face masks
  • Clean lay-down areas, no ground contact
  • Equipment accountability before close-out

When was your reservoir last cleaned?

If you're not sure, that's the answer. Talk to us about a cleaning and inspection program.

Talk to Aqualift