What must a community water system with over 100,000 people do regarding the consumer confidence report?

A community water system serving more than 100,000 people is required to provide a consumer confidence report (CCR) to ensure transparency and accountability about the quality of the water supplied to its customers. Posting the CCR on a publicly accessible website is the correct answer because it allows for efficient dissemination of important information to a large number of people. In the digital age, many consumers rely on online resources for accessing information, and this method ensures that the report is available to everyone, including those who may not receive physical copies directly.

Posting the report online also meets the requirement for public disclosure in a way that is easily accessible for all members of the community. This approach aligns with the broader trends in communication where many organizations opt for digital platforms as their primary means of distributing important information.

The other choices, while they may contribute to community awareness, do not meet the specific requirements laid out for large community water systems in the context of consumer confidence reporting. Mailing each report directly, submitting it to the government, or publishing it solely in a local newspaper may not reach all consumers effectively, especially in a large community, where relying on multiple platforms is vital to ensuring comprehensive public access to the information.