Smart Gates Hold Back the Storm in Whitstable

Southern Water deploys AI-powered CENTAUR gates in Whitstable to cut sewer spills by 30 percent using real-time stormwater controls

26 Jun 2026

Whitstable is famous for its oysters, but its coastlines have frequently borne the brunt of a distinctly modern crisis. When heavy storms hit, the local sewer network gets overwhelmed, forcing emergency releases of untreated wastewater directly into the sea. Public frustration has reached a boiling point, threatening both community health and the local tourism economy.

Underground changes are finally taking shape to address the mess. Southern Water has deployed smart sewer systems at Tankerton Circus and Diamond Road to manage high-volume flows in real time. These AI-powered units, known as CENTAUR Gates, read incoming stormwater conditions and adjust internal barriers dynamically to stop overflows before they start. By shifting water away from vulnerable choke points, utility managers aim to cut local spills by 30%.

The high-tech gates form part of a layered defense strategy. Upstream, nature-based installations work to slow surface runoff before it ever enters the pipes, taking the pressure off ageing infrastructure. Downstream, these efforts plug directly into ongoing engineering upgrades at the Swalecliffe Wastewater Treatment Works.

"By using artificial intelligence to actively manage our sewers, upgrading our treatment works and working with nature to slow the flow of rainwater, we're tackling storm overflows from every angle," says Jerome Corcoran, Pathfinder Project Manager at Southern Water.

Other water companies are watching the rollout closely. The entire European utility sector faces identical challenges with crumbling infrastructure and stricter environmental rules. If this blend of digital automation and natural flood management succeeds in Kent, it could quickly become the standard blueprint for modern coastal resilience.