Senate committee substitute to the 1st edition makes the following changes.

Creates new GS 130A-330 (Local authority to prevent backflow preventers), which prohibits water systems owned by local government units from requiring a customer to install a backflow preventer unless required by state or federal law, or to prevent a severe hazard from the customer’s connection. Provides definitions of backflow preventer and severe hazard. Specifies that the prohibition should not be construed to prevent installation of a backflow preventer if required by the State Plumbing Code due to retrofit or facility addition on the property. 

Amends the titles to reflect the new section’s contents. 

Removes changes to GS 160A-312 and GS 153A-275 requiring a public enterprise to bear the cost of complying with an adopted rule if the rule applies to a customer who had previously received approval to connect to the public enterprise system. 

Removes new section GS 162A-900 (Certain costs of customer compliance to be borne by authority or district), which applied to costs applicable for a customer who had previously received approval to connect to the applicable water or sewer system. 

Removes new section GS 130A-64.2 (Certain costs of customer compliance to be borne by sanitary district) which applied to costs applicable for a customer who had previously received approval to connect to the applicable water or sewer system.