Per- and polyfluoroalkyl substances (PFAS) are shifting from a niche contamination issue to a core design constraint for water, wastewater and brownfield infrastructure, as regulators tighten limits on “forever chemicals” in soil and groundwater. Civil engineers are being pushed to integrate PFAS-specific measures such as high-pressure membrane treatment, granular activated carbon and specialised landfill liners into drainage, flood defence and remediation schemes. The trend signals more complex risk assessments, higher lifecycle costs and potential redesign of legacy assets where PFAS-impacted leachate or run-off was not previously considered.

Sponge city strategies are gaining momentum in the UK as Ciwem’s recent Sponge Cities briefing note calls for widespread deployment of nature-based, water-retentive urban design. The concept centres on retrofitting streets, roofs and public spaces with permeable pavements, rain gardens, swales and green roofs to attenuate stormwater, reduce combined sewer overflows and manage surface water flooding. For civil and geotechnical engineers, this signals growing demand for SuDS-led masterplanning, hydraulic modelling of blue–green corridors and revised pavement and subgrade specifications to accommodate higher infiltration and storage.

Anglo American is deploying environmental DNA (eDNA) sampling across its Bowen Basin coal operations, including Capcoal, to verify fauna using rehabilitated waste dumps and tailings areas. Environment teams collect air, water and soil samples to detect species such as microbats, small mammals and birds moving through reshaped and revegetated landforms, complementing traditional trapping and camera surveys. The approach gives mine planners finer-grained data on habitat use and succession, informing design of final landforms, drainage lines and vegetation communities for progressive rehabilitation sign-off.