Tex. Health & Safety Code § 464.018

Not later than the seventh day before the date on which the attorney general intends to bring suit on the attorney general's own initiative under Section 464.015 or 464.017, the attorney general shall provide to the department notice of the suit. The attorney general is not required to provide notice of a suit if the attorney general determines that waiting to bring suit until the notice is provided will create an immediate threat to the health and safety of a client. This section does not create a requirement that the attorney general obtain the permission of or a referral from the department before filing suit.