Tideway - Environment

Environment

Some low-lying areas beside the tidal section of the Thames regularly flood at spring tides. However, in recent years, the flooding has been occurring more frequently at unusual times. One such example exists at Chiswick Lane South, where the river now bursts its banks almost daily between March and September.

Although water quality has improved over the last 40 years and efforts to clean up the Tideway have led to the reintroduction of marine life and birds, the environment of the Tideway is still poor. High levels of rainfall in London cause overflows in the sewer systems as runoff and sewers share the same systems; around 50 million cubic metres of untreated sewage are discharged into the Tideway each year from sewage treatment works and combined sewer overflows (CSOs). These CSOs can cause the deaths of marine life and health hazards for river users.

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