BLS metro-level wage data places Water and Wastewater Treatment Plant and System Operators pay in Manchester-Nashua, NH at a median of $64,100 per year ($30.82/hr/hour), drawn from the OEWS May 2025 release for this Metropolitan Statistical Area. Compared to the national median of $60,020, Manchester-Nashua pays +7% above, signaling either concentrated employer demand, a cost-of-living premium, or both. Approximately 120 water and wastewater treatment plant and system operatorss are employed across the Manchester-Nashua MSA in SOC 51-8031.

The Manchester-Nashua pay distribution spans from $49,440 at the 10th percentile to $83,160 at the 90th — a 1.7× 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 $59,710 and the 75th at $72,610, so half of Manchester-Nashua-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 Manchester-Nashua, NH 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 NH data, and peer-metro comparisons — a median is a starting point, not a ceiling.