The Altoona Water Authority will pay about $2 million less than it originally expected to pay to replace the screens on its two combined sewer overflow tanks, due to competition between a pair of ...

Large amounts of solid waste consisting of rags, condoms, sanitary pads, wet wipes and nappies are extracted from screens that are installed at some of the City of Cape Town’s sewer pump stations.

Combined Sewer Overflows (CSO) are an essential part of a combined sewage system. In combined systems, rainwater mixes with wastewater, so in heavy rainfalls, the system has too much water in it.

CSO chambers are designed to let water levels rise naturally during periods of heavy rainfall. When the capacity is exceeded, the surplus water is diverted into an overflow pipe. This excess is then ...