What regulations do states impose on the bottled water industry?

In addition to FDA’s extensive regulatory requirements, the bottled water industry is subject to state regulatory requirements as well. Although some state regulations are more comprehensive than others are, most state regulations either reference federal standards or are analogous to them.

Inspections: A significant responsibility of the state is inspecting, sampling, analyzing and approving sources of water. All of the states have the authority to inspect and review a bottlers’ operations and record keeping. To get a source approved, a bottler needs to have it inspected, and the water needs to be sampled and analyzed to ensure that it is safe to drink. This is a federal requirement under the FDA’s GMPs, which is implemented by an appropriate state agency. Under the federal GMPs, only approved sources of water can be used to supply a bottling plant.

Laboratory Certification: Another area in which some states have important responsibilities that complement federal regulations is the certification of testing laboratories. As with any food laboratory, the states can perform unannounced inspections of bottled water testing laboratories, and some states perform these annually.
Source: http://www.bottledwater.org/public/BWFactsRegHome.htm