Tex. Health & Safety Code § 772.513

A service supplier involved in providing 9-1-1 service, a manufacturer of equipment used in providing 9-1-1 service, or an officer or employee of a service supplier involved in providing 9-1-1 service may not be held liable for any claim, damage, or loss arising from the provision of 9-1-1 service unless the act or omission proximately causing the claim, damage, or loss constitutes gross negligence, recklessness, or intentional misconduct.