The EPA requires consumer confidence reports to be kept for how long?

The Environmental Protection Agency (EPA) mandates that consumer confidence reports, which provide important information about the quality of drinking water, be retained for a minimum of five years. This requirement ensures that consumers have access to their water quality information over a substantial period, allowing for transparency and accountability on the part of water suppliers. Retaining these reports for this duration also aligns with the goal of maintaining public health and safety by allowing for historical comparison and review of drinking water quality data.