The Wisconsin Department of Agriculture, Trade and Consumer 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 webpage.
What We Do
- Regularly monitor the accuracy of gas pumps, price scanners, scales, and package weights.
- Investigate complaints involving weights and measures devices.
- Review system design pre-installation plans for storage and dispensing system installations, modifications, and upgrades.
- Permit, register, and inspect flammable 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.
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 Administrative Register on the Wisconsin Legislature’s website.
New! Race Gasoline: On March 7, 2024, DATCP issued guidance that under certain conditions, sellers of race gasoline may use half-gallon unit pricing through December 31, 2024. Learn more.
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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.
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Petroleum and Storage Tanks
Storage tank systems for petroleum and hazardous liquids are regulated by DATCP.
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Licensing, Permitting, and Registration
Learn about requirements for service companies, weights and measures devices, and storage tanks.
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Service Companies and Technicians
Service companies and technicians in Wisconsin must be certified or licensed by DATCP.
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