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Integrated human health and ecological risk assessment

Integrated human health and ecological risk assessment

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CLIENT

Water Corporation

SECTOR

Water

SOLUTIONS

Human health and environmental risk

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Have a complex site or closure challenge?

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Carolyn Brumley

Senior Principal Risk Assessor

Overview

Senversa delivered an Environmental Site Assessment and integrated human health and ecological risk assessment for a wastewater treatment plant, focusing on potential impacts to groundwater and an adjacent nature reserve.

Challenge

The project required a defensible, risk-based evaluation to support both contaminated sites classification and licensing decisions, including assessment of alternative treated wastewater (TWW) discharge options in response to regulator concerns. Establishing appropriate environmental values and data quality objectives for a sensitive wetland system added further complexity.

Outcome

We undertook a targeted, data gap-driven investigation program incorporating wastewater characterisation, groundwater and surface water monitoring, flow gauging, sediment assessment, and detailed ecological studies. Multiple lines of evidence—including aquatic and terrestrial ecology and algal taxonomy—were integrated into robust human health and ecological risk assessments.

Impact

Our work provided scientifically rigorous evidence to resolve licensing queries and support continued site operations, while demonstrating best-practice assessment of risks to high-value environmental receptors in a regional setting.