National Response Center - (800) 424-8802
Visit website
For reportable quantity spills, or spills that affect a waters of the US.
Arizona Department of Environmental Quality
AZ DEQ Response Unit (602) 771-2330 or (800) 234-5677
Visit website for more information.
ADEQ Reporting Form (best in Chrome and Explorer)
Pima County on-call (520) 724-9301
When County coordination or assistance is needed or anticipated.