By this point you know the what (MCLs, MCLGs, Treatment Techniques) and the how you prove it (CCR, Public Notification, monitoring schedules). At the Class B / Class 3 level, the job shifts toward system-level thinking: how does the state actually verify your entire operation is sound, not just your latest sample result? What happens when a system genuinely can't meet a standard right now? And what do the real numbers actually look like across the full range of regulated contaminants? This guide covers the sanitary survey process, the variance and exemption framework, a real-number pass through the major contaminant categories, and the concept of monitoring waivers.
The Sanitary Survey: A Comprehensive System Checkup
A sanitary survey is an onsite review conducted by the state primacy agency (in Colorado, the Colorado Department of Public Health and Environment, CDPHE) of a