What must be corrected if a plumbing system creates a hazard due to inadequate venting?

When a plumbing system creates a hazard due to inadequate venting, the primary issue that needs to be addressed is the venting itself, as it is crucial for maintaining proper pressure and preventing sewer gases from entering living spaces. Proper venting in a plumbing system allows for the free flow of wastewater while also equalizing pressure within the drainage system. If adequate venting is not provided, it can lead to siphoning of traps, which allows harmful gases, such as hydrogen sulfide, to escape into the home, posing serious health risks.

Addressing the hazard means ensuring that the plumbing system is compliant with local building codes and standards related to venting. This might involve installing additional vent pipes, ensuring they are properly positioned, and making sure they are free of obstructions. The focus must be on rectifying the venting issue to eliminate the safety hazard created by inadequate plumbing ventilation.

Other options like water supply, noise pollution, and electrical wiring may not directly relate to the immediate concern of inadequate venting, despite their importance in overall property maintenance. Thus, focusing on the hazard associated with inadequate venting is the correct course of action.