You could also just assume you’re fine and eat a balanced diet. Most people will never hit toxic levels unless they live near an old mine or a really sketchy landfill. But if you’re like me and you need closure, order a simple home test for your water. It costs less than dinner out, and it’s way more satisfying than watching Arsenic and Old Lace again.
Final side comment: Remember, arsenic testing is detective work, not magic. Be curious, be cautious, but don’t let it ruin your rice bowl. If you do test positive, just laugh, fix the problem, and write a very dramatic blog post about it. I promise your readers will think you’re a total science badass.