OUR SERVICES
Sewer & Stormwater
Condition Assessment
Know the true state of your network before failures become emergencies. We combine CCTV data, field investigation and flow information to deliver a clear, prioritised picture of your network’s structural and hydraulic health.
SERVICE OVERVIEW
Sewer & Stormwater Condition Assessment
A sewer and stormwater condition assessment tells you the true state of your network so you can act before failures become emergencies.
Absolute GPR combines CCTV inspection data, field investigation and flow information to evaluate structural integrity and hydraulic performance, then delivers a clear, prioritised picture of network health.
For municipalities, engineers, developers and asset managers, that means smarter maintenance spending, defensible capital plans and fewer surprises.
Why Condition Assessment Matters
Buried networks fail slowly and invisibly — until they don’t. Infiltration overloads treatment works and drives up pumping costs; structural defects progress to collapses that close roads and disrupt communities; and without data, maintenance budgets get spread thinly instead of targeted where the risk is highest. A structured condition assessment turns a network you can’t see into a ranked list of what to fix, when, and why.
SCOPE OF WORK
Our Assessments Cover
A comprehensive programme covering structural, hydraulic and operational network health.
Structural Defects
Identification and grading of cracks, fractures, deformation and collapsed sections using CCTV footage and physical inspection.
Hydraulic Issues
Assessment of flow restrictions, surcharging and capacity constraints affecting the network’s ability to handle current demand.
Infiltration & Inflow (I&I)
Tracing and quantifying groundwater and stormwater entering the sewer system through defects, joints and wrong connections.
Pipe Deformation
Detection of loss of shape in pipes that reduces hydraulic capacity and signals advancing structural failure requiring intervention.
Capacity Concerns
Evaluation of whether the network can handle current and projected future demand — critical for development approvals and upgrades.
Maintenance Prioritisation
A ranked, risk-based programme of action — so limited budgets go to the assets with the highest risk and the greatest impact.
OUR APPROACH
How We Assess Your Network
We gather the evidence — CCTV footage, physical inspection, flow and level data — and interpret it against the way the network is meant to perform. The output is a report that doesn’t just list problems but ranks them, so your team knows exactly where to spend the next maintenance rand.
Evidence Gathering
CCTV footage, physical inspection, flow and level data collected across the network section under assessment.
Defect Grading
All observed defects are graded in accordance with WRC or WSAA standards, capturing type, severity and location.
Infiltration Tracing
Infiltration and inflow sources are identified — often using smoke testing to confirm wrong connections and defect locations.
Hydraulic Capacity Check
Network hydraulic behaviour is assessed against current and future demand to identify capacity and surcharge risk.
Prioritised Report Delivery
A clear, risk-ranked report is delivered — listing what to fix, when, and why — ready to support maintenance and capital planning.
EXPLORE MORE
Related Services
Often used in combination with utility locating for a more complete subsurface dataset.
Municipalities & Water Authorities
Managing reticulation and bulk sewer and stormwater networks — assessment supports capital planning, compliance and operational efficiency.
Consulting Engineers
Designing upgrades and rehabilitation — condition data informs specifications, scope and prioritisation of intervention programmes.
Developers
Assessing existing infrastructure before connection, handover or development — due diligence that prevents inherited liability.
Infrastructure Asset Managers
Responsible for performance, capital planning and regulatory compliance — assessment provides the evidence base for every major decision.
Common Questions
Frequently Asked Questions
What is infiltration and inflow (I&I)?
Infiltration is groundwater seeping into sewer pipes through cracks and defective joints. Inflow is stormwater entering through wrong connections and defects. Both overload the system and increase treatment and pumping costs — and both can be located and quantified through a structured condition assessment.
How do you assess the condition of a sewer network?
We combine CCTV inspection, physical investigation and flow data, grade the defects we find to WRC or WSAA standards, trace infiltration sources using smoke testing where required, and check hydraulic capacity against current and future demand — then deliver a prioritised, risk-based report.
Can you help prioritise our maintenance budget?
Yes — that is the whole point of the assessment. The report ranks issues by risk and impact so limited maintenance and capital budgets go to the highest-priority assets first, with a clear, defensible rationale for every decision.
EXPLORE MORE
Related Services
Condition assessment works best when combined with targeted investigation and monitoring.
CCTV Pipeline Inspection
Robotic crawler inspections delivering the HD video footage and defect data that sit at the core of every condition assessment.
Smoke Testing
Non-destructive identification of infiltration and inflow sources, illegal connections and cross-contamination within sewer networks.
Pressure & Flow Logging
Flow monitoring and pressure logging to quantify hydraulic behaviour and support the capacity assessment component of the programme.
Ready to Assess Your Network?
Talk to our team about your network and we’ll put together a scoped condition assessment programme that fits your budget and timeframe.