Any corporation, partnership, sole proprietor, independent contractor, or person that provides or offers to provide installation, removal, testing, lining, cleaning, assessments, cathodic testing or cathodic protection system design or installation for a tank system regulated under Wisconsin Administrative Code ATCP 93 must have a certification issued by the Wisconsin Department of Agriculture, Trade and Consumer Protection. Specific specialty requirements, credential application, and renewal requirements can be viewed under the Technician Credential Requirements section below.
To find a certified company or technician, visit the MyDATCP page.
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Tank Specialty Firm Registration Requirements
Companies that provide or offer to provide installation, removal, testing, lining, cleaning, or site assessment for a tank system regulated under Wis. Admin. Code ATCP 93 must hold a credential issued by DATCP and employ a technician certified to conduct that work.
Technician Credential Requirements
Technicians that provide or offer to provide installation, removal, testing, lining, cleaning, or site assessment for a tank system regulated under Wis. Admin. Code ATCP 93 must hold a credential issued by DATCP and be employed by a registered Tank Specialty Firm.
Aboveground Tank System Installer
In order to install an aboveground tank system that is regulated under Wis. Admin. Code ATCP 93, you must work for a registered Tank Specialty Firm and comply with one of the following:
- Hold a certification issued by DATCP.
- Hold a registration as a professional engineer and are competent in the engineering methods and requirements in Wisconsin for designing and installing storage tank systems for flammable, combustible or hazardous liquids.
- Work under the direct supervision of a person who holds the required certification or registration and who is responsible for the installation.
The training course to become a certified Aboveground Tank System Installer is held at Lakeshore Technical College. For more information, please visit their website or call 920-693-1167. The training course is not required, but is recommended.
To initially obtain Aboveground Tank System Installer certification, you must first pass the required exam. See the Fact Sheet below for more information.
Cathodic Protection Tester
In order to conduct cathodic protection testing for a tank system regulated under Wis. Admin. Code ATCP 93 you must work for a registered Tank Specialty Firm and have a certification issued by DATCP.
You can apply online to obtain Cathodic Protection Tester certification. See the Fact Sheet below for more information.
Corrosion Expert
In order to design or install a cathodic protection system for a tank system regulated under Wis. Admin. Code ATCP 93 you must work for a registered Tank Specialty Firm and have a certification issued by DATCP.
You can apply online to obtain Corrosion Expert certification. See the Fact Sheet below for more information.
Tank System Remover/Cleaner
In order to remove or clean a tank regulated under Wis. Admin. Code ATCP 93, with the exception of field constructed aboveground tanks and heating fuel tanks located aboveground or in basements of 1- or 2-family dwellings, you must work for a registered Tank Specialty Firm and meet one of the following requirements:
- Hold a Tank System Remover-Cleaner certification issued by DATCP.
- Be under the direct supervision of a person who holds Tank System Remover-Cleaner certification issued by DATCP.
The training course to become a certified Tank System Remover/Cleaner is held at Lakeshore Technical College. For more information, please visit their website or call 920-693-1167. The training course is not required, but is recommended.
To initially obtain Tank System Remover/Cleaner certification, you must first pass the required exam. See the Fact Sheet below for more information.
Tank System Site Assessor
In order to conduct a tank system site assessment required under Wis. Admin. Code ATCP 93, you must work for a registered Tank Specialty Firm and have a certification issued by DATCP.
To initially obtain Tank System Site Assessor certification, you must first pass the required exam. See the Fact Sheet below for more information.
Tank System Tightness Tester
In order to conduct tank system tightness testing specified in Wis. Admin. Code ATCP 93, you must work for a registered Tank Specialty Firm and have a certification issued by DATCP.
You can apply online to obtain Tank System Tightness Tester certification. See the Fact Sheet below for more information.
Tank System Tightness Tester Fact Sheet
Apply or renew online now 
Tank System Tightness Tester Certification Application PDF Version /Word Version
Tank System Tightness Tester Certification Renewal Application PDF Version /Word Version
Underground Tank System Installer
In order to install an underground tank system that is regulated under Wis. Admin. Code ATCP 93, you must work for a registered Tank Specialty Firm and comply with one of the following:
- Hold a certification issued by DATCP.
- Hold a registration as a professional engineer and are competent in the engineering methods and requirements in Wisconsin for designing and installing storage tank systems for flammable, combustible or hazardous liquids.
- Work under the direct supervision of a person who holds the required certification or registration and who is responsible for the installation.
The training course to become a certified Aboveground Tank System Installer is held at Lakeshore Technical College. For more information, please visit their website or call 920-693-1167. The training course is not required, but is recommended.
To initially obtain Underground Tank System Installer certification, you must first pass the required exam. See the Fact Sheet below for more information.
Underground Tank System Liner
In order to line or reline an underground tank system that has held or will hold flammable or combustible liquids which are regulated under Wis. Admin. Code ATCP 93, you must work for a registered Tank Specialty Firm and meet one of the following requirements:
- Hold an Underground Tank System Liner certification issued by DATCP.
- Be under the direct supervision of a person who holds an Underground Tank System Liner certification issued by DATCP.
To initially obtain Underground Tank System Liner certification, you must first pass the required exam. See the Fact Sheet below for more information.
Examination Information
*COVID-19 Update: Technician certification exams have resumed. Due to the impacts of COVID-19, the scheduling of test locations and dates is ongoing and subject to change. Additionally, the number of testers permitted at each exam is limited.
The application for AST Installer, UST Installer, Site Assessor, and Remover/Cleaner certifications requires a pass exam score of 70%.
Exams are open book. A list of permissible reference materials for the exam is below. All reference materials must be brought to the exam in paper form. Use of electronic devices during the exam is prohibited.
Training and Continuing Education Information
For the Bureau of Weights and Measures training calendar and information on continuing education, including to check your record of continuing education credits earned, please visit our Training and Continuing Education Information page.
Questions?
Please contact us at (608) 224-4942 or datcpweightsandmeasures@wi.gov.