How to Contact DTSC

Report an Environmental Concern

If you can't find the answer to your question on our website, or want to walk through regulatory requirements with a live person, our Regulatory Assistance Officers will be able to help.  Call (800) 72TOXIC - that's (800) 728-6942. From outside California, call (916) 324-2439. Don't be put off by getting voice mail - you will hear from one of them within 2 to 3 business days.

At DTSC, we are committed to being honest, open, responsive, and direct with the public. The links below direct you to various means of giving us your feedback.

  • We are interested in hearing about your experiences with DTSC, both positive and negative. Please take a moment to complete a Cal/EPA Customer Survey Form, either on line or by using a printable form.
  • We want to continue to improve our website, and your comments are an important part of doing that. Send your comments and suggestions in an e-mail to the DTSC Web Coordinator at