Although we strive to protect the environment, sewage can be released accidentally into the environment as a result of an incident such as a sewer collapse or a failure at a sewage treatment works.
We are committed to measuring our performance against varying levels of pollution, for example, a category one pollution incident would be classed as significant and a category three incident as minor.
This measure will identify how many times the water environment has been polluted as a result of our activities or assets.
Unit of measurement
Current performance (17/18)
Incidents per 10,000km sewers