sewage system
sewer system
sewage works

His work and reports led to the building of London's sewage system.

By 1900 the city was operating its own sewage system.

The sewage system played an important role in the building placement.

It was part of a sewage system built in Roman times.

Their plan was to join the river with the sewage system.

Just getting the sewage system to work could be a problem.

Thousands of people moved into the community and a modern sewage system was built.

Installation of the new water and sewage system began July 18, 1946.

With no electricity, running water or sewage system, they see summer as a time of disease and death.

Approximately 10% of the population has access to a sewage system.