The jurisdiction that this chapter shall be enforced in extends to the corporate limits plus what extra territorial zone?

The correct answer is based on the typical provisions found within municipal plumbing codes, which often outline the specific areas where the code applies. In many jurisdictions, including Omaha, the plumbing code extends beyond the corporate limits of the city to ensure that any relevant plumbing work conducted in neighboring areas is up to standard and meets safety requirements.

When the jurisdiction is specified to extend to the corporate limits plus any additional territory, it usually reflects the city's interest in managing public health and safety in adjacent areas that may be serviced by the city's infrastructure or that might otherwise impact the city.

In this case, stating that the enforcement extends to an extra territorial zone of 3 miles indicates a comprehensive approach, allowing the jurisdiction to effectively oversee plumbing practices in areas that are likely to influence or be influenced by the urban environment. This extra oversight helps maintain high plumbing standards and public safety beyond the immediate city limits, recognizing that developments or problems in these areas can have implications for the city's water supply, waste management systems, and overall environmental health.

The other options suggest shorter distances, which would not provide the same level of oversight and protection to both the city and surrounding communities, potentially leading to inconsistencies in code enforcement or safety issues in those regions.