Restaurant chain
Sonic lab tests and lawsuits
By Rashad Bayram · Published · Last updated
Lead flagged in a cheeseburger in the 2023 heavy-metal test.
- Lab findings
- 1
- Cases
- 0
- Open
- 0
- Viral claims checked
- 0
Lab findings
| Tested | Who tested | Item | Substance | Result | Sources |
|---|---|---|---|---|---|
| Oct 2023 | Moms Across AmericaAdvocacy test | Cheeseburger | Heavy metals | Lead 912% over the EPA drinking-water limitReported only as a percentage over the EPA limit for drinking water, not a food limit, so it overstates the comparison. Raw concentrations were not published in the sources we could access. | [64] |
Lawsuits and enforcement
No contaminant lawsuits against Sonic found in court records or major outlets as of 29 Oct 2026.
Lawsuit claims are allegations until a court rules. Advocacy-group tests are reported as published, with their limits. General information, not legal or medical advice.
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