Governance & Policy
US Safe Drinking Water Act
Definition
The Safe Drinking Water Act, enacted in 1974, authorises the US Environmental Protection Agency to set national health-based standards for contaminants in public drinking water systems, administered mainly through state programmes. It covers maximum contaminant levels, treatment techniques, monitoring, source water protection and, since 1996, consumer right-to-know reporting.
References
Standards, monitoring and enforcement
Companion water statute
Overview
What it means
Tap water safety in the US is a federal standards regime executed by tens of thousands of local utilities.
How it is used
Utilities monitor and report compliance; EPA adds standards — including the first national PFAS drinking water limits finalised in 2024; states oversee systems.
Why it matters
It is the legal guarantee behind US drinking water and the frontline statute for emerging-contaminant regulation.