Which organization adopted and revised the current OSSF rules in 1997?

The correct answer is TCEQ, which stands for the Texas Commission on Environmental Quality. This organization is responsible for the adoption and revision of the On-Site Sewage Facility (OSSF) rules and regulations in Texas. TCEQ plays a critical role in establishing environmental standards to protect public health and the environment, including overseeing the operations and compliance of OSSF systems.

In 1997, TCEQ revised the existing OSSF rules to improve their effectiveness and ensure they met the needs of the state's environmental policies. This revision process typically involves analysis and feedback from various stakeholders, making sure the rules are appropriate for addressing emerging challenges in sewage management and public health.

Other organizations mentioned may play a role in environmental oversight or regulation, but they do not have the authority to specifically adopt or revise the OSSF rules in Texas like TCEQ does. For example, the EPA is a federal agency that oversees environmental laws nationwide, but it is not directly involved in local OSSF rules. The OSSF Committee may provide input or recommendations but does not have the regulatory authority that TCEQ possesses. Local governments implement and enforce the rules but rely on TCEQ for the creation and revision of those rules.