Ala. Code § 33-6-12
This chapter and rules and regulations and orders hereunder shall be applicable in the entire state unless such rule, regulation or order is by its own terms restricted. Other regulations, ordinances or other laws when not in conflict with this chapter or rules, regulations or orders adopted hereunder may be enforced by agencies responsible for such enforcement, whether said regulations, ordinances or other laws are more or less restrictive on disposal of sewage or litter, but when in conflict, this chapter and the rules, regulations or orders adopted hereunder shall supersede and be applicable if said other regulations, ordinances or other laws are less restrictive than this chapter, rules, regulations or orders adopted hereunder.
Ala. Code § 33-6-12 (1975)