What was the goal of the treaty on the non-proliferation of the nuclear weapons enacted in 1970 that is still in effect today

To achieve general and complete nuclear disarmament.

Explanation:

The goal of the Treaty on the Non-Proliferation of Nuclear Weapons (NPT), is to achieve general and complete nuclear disarmament, prevent the spread of making weapons, and to promotes the use of nuclear technology for the purpose of human and societal advancement.

Having signed the Treaty which became effective in 1970, by two groups the Nuclear weapons States and Non-Nuclear Weapons States. The two groups both seek to achieve complete disarmament from the Nuclear Weapons States, and stopping the Non-Nuclear Weapons States from pursuing the idea of making nuclear weapons.