Requires owners of certain buildings to test drinking water for Legionella bacteria.

New Jersey's S 1230 requires owners of specific buildings - including hospitals, nursing homes, assisted living facilities, correctional facilities, public housing, and certain residential buildings - to test drinking water at taps for Legionella bacteria at least once yearly. Testing must follow Department of Environmental Protection (DEP)-approved methods and be conducted by DEP-accredited labs, with results submitted to the DEP. If Legionella levels exceed DEP-established standards, owners must immediately notify occupants and remediate contamination within 30 days, completing work within six months. Violations would be enforced under the Safe Drinking Water Act, potentially resulting in civil penalties.