BLS metro-level wage data places Water and Wastewater Treatment Plant and System Operators pay in Southeast-Central Idaho nonmetropolitan area at a median of $47,770 per year ($22.97/hr/hour), drawn from the OEWS May 2025 release for this Metropolitan Statistical Area. Compared to the national median of $60,020, Southeast-Central Idaho nonmetropolitan area pays 20% below, which typically tracks with a lower local cost of living or smaller specialized-employer cluster. Approximately 400 water and wastewater treatment plant and system operatorss are employed across the Southeast-Central Idaho nonmetropolitan area MSA in SOC 51-8031.

The Southeast-Central Idaho nonmetropolitan area pay distribution spans from $40,780 at the 10th percentile to $64,110 at the 90th — a 1.6× spread that reflects experience tenure, specialization, employer size, and the difference between public-sector, nonprofit, and private-sector compensation inside the metro. The 25th percentile sits at $41,880 and the 75th at $59,090, so half of Southeast-Central Idaho nonmetropolitan area-based water and wastewater treatment plant and system operatorss earn within that middle band.

Metro figures capture where you actually work, not just where you live — which matters for commuters. BLS draws metro boundaries from the OMB MSA definitions, so Southeast-Central Idaho nonmetropolitan area covers the central city plus outlying counties tied to the metro economically. Remember that OEWS wages reflect base pay only: employer-provided health insurance, retirement matches, stock options, signing bonuses, overtime, and tips are excluded and can add 20-40% to real total compensation. Before using this metro median as a negotiation anchor, triangulate against the same occupation's national profile (linked below), its state-wide ID data, and peer-metro comparisons — a median is a starting point, not a ceiling.