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farmland before being treated. By targeting the moor and farmland stages of this process, less energy and fewer chemicals are required during the water treatment process at Littlehempston, while also keeping bills down and improving habitats for wildlife. The programme is
Salcombe Wastewater Treatment Works Prior to 1994, Salcombe’s sewage was discharged from a number of old outfalls into the estuary. As part of South West Water’s ‘Clean Sweep’ programme the wastewater treatment works was constructed and completed in 1995. Work under the scheme also included reducing the amount of seawater getting into the sewer system at high tide, replacing pipe- lines and stopping and improving outfalls. The water treatment works treats
sewage water through three stages - primary settlement, secondary biological treatment and UV disin- fection.
By targeting the moor and
in its tenth year and is the first of its kind set up by a water compa- ny in the UK. Working alongside local “Up- stream Thinking” partners, including Devon Wildlife Trust and Exmoor National Park Authority, the scheme is restoring wetlands and working closely with farmers.
farmland stages of this process, less energy and fewer chemicals are required
The ‘liquid sludge’ from Salcombe is taken to Kingsbridge for dewatering and the treated waste- water is then discharged into the Kingsbridge Estuary. Salcombe’s treat-
ment works serves a resident population
of around 2,500 people, rising to nearly 6,000 during the peak sum- mer season.
Wastewater Our wastewater – whatever goes down the sink, loo and drain - usually flows through pipes by gravity to a pumping station, which then pumps the wastewater to a treatment works. Much of Kingsbridge, Salcombe and Dartmouth’s sewerage net- works originally date from Victorian times, but it wasn’t until the 20th century that sewage was treated before being discharged directly into rivers or the sea. The South West Water spokesper- son said: “In 1989, when the water industry was privatised, South West Water embarked on an ambitious ‘Clean Sweep’ programme to build new wastewater treatment works across the region and close more than 200 crude outfalls.”
Kingsbridge Wastewater Treatment Works Kingsbridge Wastewater Treat- ment Works serves a pop- ulation of around 7,000 and treats an average of 3,800 cubic metres of sewage a day. The sewage is pumped to the works from South- ville Embankment and Westville Sewage Pumping Stations. The treated wastewater is put
Treatment Works for treatment.
“Clean Sweep” – cleaning up Dartmouth’s sewage system Until 1997 raw sewage from Dart- mouth was discharged through four outfalls straight into the River Dart Estuary. South West Water said it started
looking at potential locations for a wastewater treatment works for Dartmouth in 1992. Six sites were considered, including under the New Ground car park, the southern end of Coronation Park and the north end of Sand Quay Marina. The spokesperson said: “We sub-
mitted a proposal for a treatment works at The Embankment, totally enclosed and on land reclaimed from the estuary. “However, the local community
The site
produces around 60 cubic metres of biosolids (sludge) a week
was not keen, and discussions around finding a more suitable site continued. Meanwhile in 1997, Dartmouth’s sewage received preliminary treatment (screening) for the first time – a step in the right direction. At the same time, two
60ft shafts were dug in the
through three stages of treatment, including ultraviolet disinfection, and then discharged into the Kingsbridge Estuary. The solid byproduct ‘liquid
sludge’ is dewatered by a centri- fuge on site and the dry ‘cake’ is then taken to Tiverton Wastewater
town, one at Mayor’s Avenue and one underneath Coronation Park, to store storm water.” Dartmouth Wastewater Treat-
ment Works was eventually built on the site of a redundant water treatment works at the head of Old Mill Creek. The £11 million scheme, which provides secondary (bio- logical) treatment and ultraviolet
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