Guide to Beach Live
Step-by-step guide to how BeachLive works
- It's a beautiful autumn day at Preston Sands beach in Paignton. However, weather forecasts indicate a storm might blow in over Paignton from the Channel later.
- The weather front drenches Paignton causing water to run off roads and driveways into stormwater drains, many of which are connected to the sewerage system. Tens of thousands of gallons are held in the storm tanks behind the seafront and at Preston Green.
- The continued rainfall means the sewer system around the town is at capacity and Brokenbury Waste Water Treatment Works is treating maximum volumes. The levels in the storm tanks at Preston Green reach overflow and the stormwater is discharged through a screened combined sewer overflow (CSO) into the sea 280 metres from Preston Sands beach. This lessens the risk of sewage backing up through toilets into nearby low-lying properties.
- The event duration monitor (EDM) on the CSO measures an overflow lasting 8 minutes and relays a signal to South West Water's control room in Exeter.
- The overflow meets the 'significance' threshold set for the bathing water on the Beach Live system.
- An automated alert is sent to the beach manager, the Environment Agency and Surfers Against Sewage. We provided this data free of charge to Surfers Against Sewage for their Safer Seas Service.
- The storm dies down and stormwater in the system is passed forward to Brokenbury for treatment. Levels in the tank at Preston Green fall and there are no more significant overflows. The discharges which may have affected water quality are diluted by the sea and move away on the tide from the beach.
- After 12 hours with no more significant overflow events, a withdrawal notice is sent to the beach manager, the Environment Agency and Surfers Against Sewage.