The TCEQ requires that distribution pressure should never fall below what minimum level?

The correct minimum level for distribution pressure required by the Texas Commission on Environmental Quality (TCEQ) is 20 psi. This standard is essential for ensuring adequate water delivery in a distribution system. Maintaining a minimum pressure of 20 psi helps prevent issues such as water quality degradation and the contamination of the water supply.

If the pressure falls below this level, there is a risk of backflow, which can cause pollutants and contaminants to be drawn into the potable water system. By setting the minimum pressure at 20 psi, TCEQ aims to protect public health and ensure a reliable water supply to the end users.

Overall, this requirement reflects best practices in water distribution management while prioritizing safety and service reliability for communities.