What is the apocalypse in the film of erin brockovich

There is no mention or depiction of an apocalypse in the film "Erin Brockovich." The film is based on a true story and it focuses on Erin Brockovich, a legal clerk who helps build a case against a company accused of polluting a community's water supply. The central theme of the film is environmental contamination and its impact on the affected community, rather than an apocalypse.