What is the inspection frequency that a remote operator must inspect a grade 1 or grade 2 water treatment plant or distribution system that produces groundwater?

• A. Weekly
• B. As often as necessary, but no less than monthly
• C. Monthly
• D. Quarterly

Answer: (B)

The key idea is that a remote operator must oversee groundwater systems with enough frequency to catch issues as they arise, not just on a fixed schedule. The rule requires inspections as often as necessary to keep the plant and distribution system safe and functioning, but with a guaranteed minimum of once a month. This flexible approach lets the operator respond to conditions, alarms, maintenance, or unusual readings by inspecting more often when needed, while ensuring there’s at least monthly oversight.

A weekly schedule is not required as a default, and a strict monthly cadence doesn’t allow for increases in response to problems. Waiting only quarterly could miss critical changes or failures, risking water quality and service.