A public lab in Germany found 0.13-1.22 mg/kg lead in turmeric in 2020. The legal limit for vegetables is 0.1 mg/kg, 3 mg/kg for nutritional supplements; there is (or was, in 2020) no legal limit for spices. At 1 tsp/day, they don't expect any immediate health impact from turmeric alone, but you should be exposed to as little lead as possible.

https://www.ua-bw.de/pub/beitrag.asp?subid=2&Thema_ID=2&ID=3...