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Rehabilitation & Works Verification

Before-and-after flow monitoring that shows whether relining, cleaning and repair works delivered what was paid for.

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At a glance

  • Before and afterBaseline monitoring before the works begin
  • Rainfall alongside flowWet weather response compared before and after
  • Whether capacity was restoredFlow profiles show the return to baseline
  • A documented outcomeA report for asset and planning teams

Rehabilitation is a big investment, and flow data is the most direct way to show it worked. We monitor before and after relining, cleaning and repairs, so the change is measured, not assumed.

Utilities increasingly use these comparisons to check contractor performance, which means fewer disputes and clearer accountability.

Illustration of two hydrographs with comparable storms. Before the works, measured flow rises far above the dry weather flow pattern during and after the rain. After the works, it rises only a little above it.

Before the works

After the works

  • Rainfall
  • Measured flow
  • Dry weather flow
  • Inflow and infiltration
Illustration: comparable storms before and after the works. After them, measured flow rises far less above dry weather flow.

A before-and-after approach

  1. 01

    Baseline monitoring before works begin

  2. 02

    Rainfall recorded alongside flow, to compare wet weather response before and after

  3. 03

    Monitoring through and after the works

  4. 04

    Depth, flow and wet weather response compared against the baseline

  5. 05

    A report that documents the outcome for asset and planning teams

What it tells you

Whether capacity was restoredFlow profiles show the network returning to baseline.
Whether infiltration fellLess variation in depth and flow during rain confirms infiltration fell.
Whether the model was rightMeasured results confirm, or correct, the improvements the model predicted.
Where to spend nextLong-term monitoring proves past works and guides the next round of spending.

Results from the field

24 h until flows were back at baseline after relining

After cleaning and relining, our flow profiles showed the network back to baseline within a day, confirming full capacity was restored.

Coastal network
40% less variation in depth and flow during rain

Monitoring after relining showed far less variation in wet weather. The works had cut infiltration, and the model’s predicted improvement was real.

Metropolitan utility

4 more results from EDS programs

  • $6Mtreatment plant expansion avoided
  • 34sites installed and operated in 12 weeks
  • 15sites of sewer flow and rainfall monitoring in eight weeks
  • 30%less spent on unnecessary relining
All results

Talk to the people who measure it.

Tell us about your network, site or project. A real person from our team will come back to you.

Start an enquiry 1300 721 683