Requires DEP to establish maximum contaminant level for hexavalent chromium in drinking water.

This bill requires New Jersey's Department of Environmental Protection (DEP) to set a maximum contaminant level of 10 parts per billion for hexavalent chromium (chromium-VI) in drinking water. It applies to all public water systems in the state, with implementation timelines based on system size: large systems (10,000+ connections) must comply within two years, medium systems (1,000-9,999 connections) within three years, and small systems (<1,000 connections) within four years after the bill takes effect. The bill specifies that this standard only affects hexavalent chromium, not existing limits for total chromium, and allows the DEP to adopt stricter standards later if recommended by the Drinking Water Quality Institute. The DEP must finalize the rule within one year of the bill's effective date.