Combined sewer system

Combined sewer system

A sewer system that carries both sewage and stormwater runoff. Normally, its entire flow goes to a waste treatment plant, but during a heavy storm, the volume of water may be so great as to cause overflows of untreated mixtures of stormwater and sewage into receiving waters.
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References in periodicals archive ?
Tenders are invited for installation of sanitary and storm sewer to improve and separate existing combined sewer system.
The project also included blocking-off the 60-inch sewer downstream in order to eliminate an abandoned manufacturing site's storm water from continuing to run into the city's combined sewer system and treatment plant.
Moosey said the DPW could consider its storm water, combined sewer system, wastewater collection system, the Upper Blackstone Water Pollution Abatement District wastewater treatment plant, and flooding in the Green Island area as one large interconnected system.
Their "Project VORTEX" is a technological solution to identify and remove clogs from Maynilad's Combined Sewer System and to maintain these pipes clean and garbage free.
During periods of heavy rainfall or snowmelt, however, the wastewater volume in a combined sewer system can exceed the capacity of the sewer system or treatment plant.
We just hope the people of Llanelli realise what harm this councillor is doing to their economy by peddling her scare stories and trying to stop much needed development in the area, which incidentally would help to reduce any pressure on the combined sewer system, which she believes exists.
Problems with the combined sewer system in the area means heavy rainfall can easily block up drains.
The combined sewer system had originally produced Unsatisfactory Intermittent Discharges (UIDs) from the combined sewer system, but Haswell's work aims to alleviate this problem.
Because the Detroit collection system is a combined sewer system, both sanitary and storm flows are transported to the wastewater treatment plant through the same large sewers.
Combined sewer overflow is the discharge of wastewater and stormwater from a combined sewer system - a sewer system that collects both sanitary sewage and stormwater runoff - directly into a lake, stream, river or ocean.
Environment Agency officers visited the site on 16 November 2016 and saw oil seeping from loose car engines onto the concrete and into a combined sewer system nearby.
Work under the first consent decree, governing the combined sewer system, was completed in 2007.

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