A class D certified operator can operate a public water system with how many connections?

A Class D certified operator can operate a public water system that serves up to 250 connections. This certification level is designed for operators who manage smaller systems, where the operational requirements, regulations, and complexity differ from larger systems.

By limiting the number of connections to 250, the TCEQ ensures that operators are adequately trained for the systems they manage, allowing for effective oversight in terms of water quality, safety, and compliance with regulations. This aligns with the goal of ensuring public health and safety while recognizing the varying demands placed on operators based on the size and scope of the water systems they oversee.

In this context, the other options of 100, 500, and 1,000 connections exceed the capacity that a Class D operator is certified to manage, thereby reinforcing the need for greater qualifications and experience in larger systems, which are typically overseen by operators with Class C or higher certifications.