Because the New York City sewer system combines street runoff with household and industrial sewage, during periods of rain the total volume exceeds the treatment works' capacity to handle it.

Treatment of urban and industrial sewage and its re-use in agriculture.

Since the 1990s, the Saronic Gulf was starting to become polluted by industrial and residential sewage from Athens and Piraeus.

In Giza, they have the largest governorate discharge of agricultural, industrial and domestic sewage that goes directly into the Nile through three drains without treatment.

The new standards, which will require that all household and industrial sewage undergoes treatment, must be met by all European towns and cities by 2005.

This type of pump is often used to transfer municipal and industrial sewage.

Until the 1980s domestic and industrial sewage from Alexandria were discharged without treatment into the Mediterranean Sea, where it caused pollution of beaches and degradation of aquatic life.

Heavy metals from industrial sewage accumulates in lobsters and other marine life, making them unsafe for human consumption.

The pollution was exacerbated by the discharge of waste from pig farms as well as of untreated industrial and municipal sewage.

Meanwhile, this land has Yingcheng reservoir and processing establishments for industrial sewage in the south and public city infrastructures in the north.