Do You Need a Water/Wastewater Operator License? State-by-State Guide

Water and wastewater treatment plant operators manage systems that treat water for safe drinking or process sewage and wastewater. All states require these operators to be certified or licensed due to the critical public health role they play.

State-by-State Water/Wastewater Operator License Requirements

The table below shows whether each state requires a state-level water/wastewater operator license, the regulation level (where available), and a link to the relevant licensing authority.

What If My State Doesn't Require a License?

Even if your state does not mandate a state-level water/wastewater operator license, you may still need to meet local requirements. Many cities and counties impose their own licensing, registration, or permit requirements. Additionally, voluntary certification from professional organizations can enhance your credibility and job prospects. Always check with your local government and relevant professional associations.

How to Get Licensed

If your state requires a water/wastewater operator license, requirements typically include completing an approved education or training program, passing an exam, and submitting an application with applicable fees. Specific requirements vary by state — visit your state's licensing board website (linked in the table above) for detailed information on the application process.

Requirements change — always verify with your state's licensing authority.