Senior Level Water Treatment Plant Operator Jobs

Senior level water treatment plant operator jobs place experienced operators in charge of system oversight, regulatory compliance, and the crews and processes that keep drinking water safe at scale. Most openings are on-site roles across Consulting & Professional Services, Chemicals & Materials, and Construction & Real Estate, with employers like Lochmueller, Gresham Smith, and Freese and Nichols hiring at this level now.

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Overview

Open roles26
Top stateIndiana
Top employerLochmueller
Top cityIndianapolis, IN
Work type73% On-site
Top industryConsulting

Showing 5 of 26+ Senior Level Water Treatment Plant Operator jobs

Wastewater Treatment Engineer
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Added 1w ago
Wastewater Treatment Engineer
VS ENGINEERING
Indianapolis, Indiana
Specialized Engineering
Civil & Structural Engineering
Project & Program Management
Engineering (Non-Software)
Civil Engineering
Environmental Engineering
Project Management
On-Site
Bachelor's
11-50

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Treatment Center Account Director
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Added 1w ago
Treatment Center Account Director
McKesson
California
Partnerships & Business Development
Sales
Customer Success
Consulting & Professional Services
Business Development
$155k - $258k/yr
On-Site
None
10,000+

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Senior Water Treatment Engineer
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Added 1w ago
Senior Water Treatment Engineer
Lochmueller Group
Merrillville, Indiana
Specialized Engineering
Civil & Structural Engineering
Project & Program Management
Engineering (Non-Software)
Civil Engineering
Environmental Engineering
Project Management
On-Site
Bachelor's

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Senior Water Treatment Engineer
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Added 1w ago
Senior Water Treatment Engineer
Lochmueller Group
Evansville, Indiana
Specialized Engineering
Civil & Structural Engineering
Project & Program Management
Engineering (Non-Software)
Civil Engineering
Environmental Engineering
Project Management
On-Site
Bachelor's

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Senior Water Treatment Engineer
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Added 1w ago
Senior Water Treatment Engineer
Lochmueller Group
Jeffersonville, Indiana
Specialized Engineering
Civil & Structural Engineering
Project & Program Management
Engineering (Non-Software)
Civil Engineering
Environmental Engineering
Project Management
On-Site
Bachelor's

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Senior Level Water Treatment Plant Operator Job Market

Who's Hiring

Lochmueller9 open roles
Gresham Smith3 open roles
Freese and Nichols3 open roles

Top Industries Hiring

  • Consulting & Professional Services17
  • Chemicals & Materials3
  • Construction & Real Estate3
  • Biotechnology & Pharmaceuticals2

Senior Level Water Treatment Plant Operator Jobs: Frequently Asked Questions

How do I get a senior level water treatment plant operator job?

Employers hiring at the senior level look for operators who have held a lead or supervisory role, carry a higher-grade state certification, and can point to concrete outcomes like system upgrades, compliance achievements, or crew development. Demonstrating that you have owned a process end to end, not just executed tasks, is what separates senior candidates from mid-level applicants.

Which companies hire senior level water treatment plant operators?

Companies hiring senior level water treatment plant operators right now include Lochmueller, Gresham Smith, and Freese and Nichols, based on current listings on Migrate Mate as of November 2026. Hiring at this level comes primarily from municipal utilities, regional water authorities, and private environmental services firms managing large-scale treatment infrastructure.

Are there remote senior level water treatment plant operator jobs?

Yes, though the nature of the work means most roles require on-site presence. About 27% of senior level water treatment plant operator openings are remote or hybrid as of November 2026, and those tend to be roles with a significant technical consulting, training, or regulatory oversight component rather than hands-on plant operation.

What makes a water treatment plant operator role senior level?

Senior level roles go beyond operating equipment to include owning plant performance, guiding compliance strategy, and mentoring junior operators. Expectations typically include holding an advanced state certification, leading capital projects or process improvements, interpreting complex regulatory requirements, and serving as the technical authority that less experienced staff escalate to.

Which industries hire the most senior level water treatment plant operators?

Senior Level water treatment plant operator roles concentrate in Consulting & Professional Services, Chemicals & Materials, and Construction & Real Estate, based on current listings on Migrate Mate as of November 2026. These sectors drive hiring at the senior level because they operate large, continuously running treatment systems that require deep institutional knowledge and credentialed leadership to maintain safety and regulatory standing.