Department of Agriculture, Trade and Consumer Protection

​​The Wisconsin Department of Agriculture, Trade an​d Consum​er Protection (DATCP) conducts routine inspections to ensure that consumers receive their money's worth in Wisconsin stores. It also regulates petroleum storage tanks and fuel quality​. Find our weights and measures resources on this w​ebpage.​​

​​​What W​e D​o​​​​

• Regularly monitor the accuracy of gas pumps, price scanners, scales, and package weights.
• Investigate complaints involving ​w​eights and measures devices.
• ​Review system design pre-installation plans for storage and dispensing system installations, modifications, and upgrades.
  
• Permit, register, and inspect fl​ammable and combustible liquid storage tanks.
  
• Inspect and test liquid petroleum products.
  
• Credential companies and technicians who work with storage tanks and specific weights and measures devices​.​
  
• Maintain the State of Wisconsin weight standards in the Wisconsin Weights and Measures Metrology Laboratory.
  

 find a service company              FIL​E A w&M COMPLAINT             report a spill

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Announcements​​​​​

​​ATCP 94: On, March 1, 2024, the final rule for Wis. Admin. Code ch. ATCP 94, Petroleum and Other Liquid Fuel Products, went into effect. ​The final rule may now be found in the state’s Administrativ​e Register on the Wisconsin Legislature’s website.

​​Race Gasoline: On March 7, 2024​, DATCP issued guidance that under certain con​ditions, sellers of race gasoline may use half-gallon unit pricing through December 31, 2024. Learn ​m​ore.​

Sign up​ to receive news notifications and industry updates from DATCP.​​
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​Quick Links

Fact Sheets   |   DATCP Consumer Protection   |   DATCP Business Trade Practices   |   DNR   |   DSPS​

​​​​​​​​​​ Weights and Measures DATCP inspects and calibrates measuring devices to ensure consumers get their money's worth. LEARN MORE​ ​​	​​​  Petroleum and Storage Tanks Storage tank systems for petroleum and hazardous liquids are regulated by DATCP. ​LEARN MORE
​ ​​ ​Licensing, Permitting, and Registration Learn about​ requirements for service companies, weights and measures devices, and storage tanks​. LEARN MORE	​​​ Service Companies and Technicians Service companies and technicians in Wisconsin must be certified or licensed by DATCP. LEARN MORE ​
​​ ​​ Laboratory Services Thousands of tests are conducted every year in DATCP's metrology and fuel quality lab. LEARN MORE​	​ ​​​ Training and ​Continuing Education Tank installers and system inspectors must receive continuing education to remain certified. LEARN MORE​

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