Wherever the powers and authority granted in this chapter cannot be reasonably and efficiently exercised by confining the exercise thereof within the corporate limits of the municipality, the powers and authority of the municipality shall extend beyond the corporate limits to the extent necessary to the reasonably efficient exercise of such powers and authority within the corporate limits.

Such powers and authority, unless otherwise provided in this code or elsewhere in law, shall not, however, extend more than one mile beyond the corporate limits, and such powers and authority shall not extend into the corporate limits of another municipality without the consent of the governing body thereof..