Texas Water Code - WATER § 28.053. Financial Responsibility

(a) The commission may require in a shaft permit that the permittee reimburse the commission for reasonable costs of monitoring and on-site, full-time surveillance to determine compliance with a rule, permit, or other order of the commission.

(b) A person to whom a shaft permit is issued may be required by the commission to maintain a performance bond or other form of financial security to ensure payment of costs that may become due in accord with Subsection (a) of this section or to ensure that an abandoned shaft is safely and properly sealed and plugged.