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Business First Steps

Index of State of Delaware Business Licenses and Registrations

Water Treatment Plant Operator

Operator Certification

The mission of the Office of Drinking Water is to protect the health of Delawareans by assuring safe drinking water through the use of certified water treatment plant operators.

More Information

Department: Health and Social Services

Division: Public Health

Office: Office of Drinking Water


Licenses for Water Operators In Training as well as Certified Drinking Water Operators last for aproximately two years.


Application Form

Licensure applications are e-mailed and/or sent to the individuals upon request.

Renewal Form

Licensure renewal forms are sent to the facilities annually, prior to the expiration of the current license.

Applicable Laws

Applicable Rules and Regulations


Edward Hallock can be contacted by email at and by phone at 302-741-8630.


This search covers most of the frequently requested licenses, certifications, registrations, and filings that the State of Delaware requires. However, this is not a fully exhaustive list of every possible requirement. Please consult with the appropriate state agencies to find out if there are additional requirements you must fulfill.

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