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Ontario, CA
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Ontario, CA
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108
"reverse osmosis"
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Ontario, CA
in last 30 days
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Last 30 days
Senior Water Chemistry Engineer Systems & Sanitation
APPLY
Jacuzzi Brands
Chino, CA
June 17th, 2026
Water/Wastewater Engineers
Water Supply and Irrigation Systems
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Water/Wastewater Technician
NEXT STEPS
City Of Ontario
Ontario, CA
June 17th, 2026
Water and Wastewater Treatment Plant and System Operators
Water Supply and Irrigation Systems
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Water/Wastewater Technician
NEXT STEPS
City Of Ontario Ca
Ontario, CA
June 11th, 2026
Water and Wastewater Treatment Plant and System Operators
Water Supply and Irrigation Systems
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Water/Wastewater Technician
NEXT STEPS
City Of Ontario California
Ontario, CA
June 12th, 2026
Water and Wastewater Treatment Plant and System Operators
Water Supply and Irrigation Systems
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Field Service Engineer, Water Treatment ($10K Sign on Bonus)
NEXT STEPS
Xylem
Mira Loma, CA
June 18th, 2026
Water/Wastewater Engineers
Water Supply and Irrigation Systems
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Stormwater Maintenance Crew Leader
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Government
Pomona, CA
June 27th, 2026
Water and Wastewater Treatment Plant and System Operators
Water and Sewer Line and Related Structures Construction
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Water Treatment Plant Operator
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Los Angeles County Sanitation Districts
Fontana, CA
June 20th, 2026
Water and Wastewater Treatment Plant and System Operators
Sewage Treatment Facilities
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Onsite Waste Water Operator - 2nd Shift, Health & 401(k)
NEXT STEPS
Ventura Foods
Ontario, CA
June 24th, 2026
Water and Wastewater Treatment Plant and System Operators
Sewage Treatment Facilities
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Wastewater Plant Operator OIT / I / II
NEXT STEPS
GovernmentJobs.com
Fontana, CA
June 14th, 2026
Water and Wastewater Treatment Plant and System Operators
Sewage Treatment Facilities
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Water Distribution Operator I - On-Call Field Utility Tech
APPLY
Waterwisepro
Fontana, CA
June 20th, 2026
Water and Wastewater Treatment Plant and System Operators
Water Supply and Irrigation Systems
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Water Distribution Operator I / SGV and Fontana Water Company
APPLY
Waterwisepro
Fontana, CA
June 20th, 2026
Water and Wastewater Treatment Plant and System Operators
Water Supply and Irrigation Systems
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Water Treatment Plant Operator I
NEXT STEPS
City Of Pomona California
Pomona, CA
June 26th, 2026
Water and Wastewater Treatment Plant and System Operators
Water Supply and Irrigation Systems
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Water Meter Field Technician II
NEXT STEPS
City Of Burlington Vt
Ontario, CA
June 8th, 2026
Water and Wastewater Treatment Plant and System Operators
Water Supply and Irrigation Systems
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Lead Wastewater Treatment Plant Operator
NEXT STEPS
Los Angeles County Sanitation Districts
Fontana, CA
June 21st, 2026
Water and Wastewater Treatment Plant and System Operators
Sewage Treatment Facilities
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Water Treatment Plant Operator I
NEXT STEPS
City Of Pomona
Pomona, CA
June 26th, 2026
Water and Wastewater Treatment Plant and System Operators
Water Supply and Irrigation Systems
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Entry-Level Water Distribution Operator
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Essel
Pomona, CA
June 24th, 2026
Water and Wastewater Treatment Plant and System Operators
Water Supply and Irrigation Systems
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Stormwater Field Operations Lead
APPLY
City Of Pomona
Pomona, CA
June 20th, 2026
Water/Wastewater Engineers
Water and Sewer Line and Related Structures Construction
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Senior Engineer
NEXT STEPS
Apwa Inland Empire Branch
Chino Hills, CA
June 20th, 2026
Water/Wastewater Engineers
Water Supply and Irrigation Systems
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WASTEWATER PLANT OPERATOR I or WASTEWATER PLANT OPERATOR I TRAINEE
NEXT STEPS
GovernmentJobs.com
Mira Loma, CA
June 13th, 2026
Water and Wastewater Treatment Plant and System Operators
Sewage Treatment Facilities
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WASTEWATER PLANT OPERATOR I or WASTEWATER PLANT OPERATOR I TRAINEE
APPLY
City Of Riverside
Jurupa Valley, CA
June 30th, 2026
Water and Wastewater Treatment Plant and System Operators
Sewage Treatment Facilities
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Mechanic IV
APPLY
Government
Chino, CA
June 29th, 2026
Maintenance and Repair Workers, General
Water Supply and Irrigation Systems
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Intern (Facilities)
NEXT STEPS
Inland Empire Utilities Agency
Chino Hills, CA
June 20th, 2026
Facilities Managers
Water Supply and Irrigation Systems
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Staff Engineer
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Wsc Water Systems Consulting
Ontario, CA
June 1st, 2026
Water/Wastewater Engineers
Engineering Services
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Surface Water Department Manager
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Michael Baker International
Ontario, CA
June 26th, 2026
Water/Wastewater Engineers
Engineering Services
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Engineer (Public Works) - Water & Wastewater Projects
NEXT STEPS
American Water Works Association
Jurupa Valley, CA
June 26th, 2026
Water/Wastewater Engineers
Water and Sewer Line and Related Structures Construction
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Staff Chemical Engineer - Water Systems and Chemistry
APPLY
Jacuzzi Brands
Chino, CA
June 20th, 2026
Chemical Engineers
Water Supply and Irrigation Systems
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Staff Water Design Engineer - Southern California
APPLY
Wsc
Ontario, CA
June 30th, 2026
Water/Wastewater Engineers
Engineering Services
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California Water/Wastewater Practice Lead
APPLY
Michael Baker International
Ontario, CA
June 29th, 2026
Water/Wastewater Engineers
Engineering Services
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Utility Associate Civil Engineer - Water Resources Projects
APPLY
City Of Pomona
Pomona, CA
June 20th, 2026
Water/Wastewater Engineers
Water and Sewer Line and Related Structures Construction
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Control Systems Analyst I-II (DOE)
NEXT STEPS
DiversityJobs
Chino, CA
June 18th, 2026
Computer Systems Analysts
Water Supply and Irrigation Systems
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Senior Hydromechanical Engineer - Hydropower & Pump Systems
APPLY
Mead & Hunt
Ontario, CA
June 17th, 2026
Water/Wastewater Engineers
Engineering Services
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Entry-Level Civil Engineer - Water Resources
NEXT STEPS
Olsson
Pomona, CA
June 2nd, 2026
Civil Engineers
Engineering Services
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Senior Design Engineer
NEXT STEPS
Essel Environmental
Pomona, CA
June 25th, 2026
Civil Engineers
Engineering Services
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Intern (Planning & Resources)
NEXT STEPS
Inland Empire Utilities Agency
Chino Hills, CA
June 17th, 2026
Water Resource Specialists
Administration of Air and Water Resource and Solid Waste Management Programs
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Residential Sales Representative
APPLY
Crh California Water
Ontario, CA
June 20th, 2026
Sales Representatives of Services, Except Advertising, Insurance, Financial Services, and Travel
Plumbing and Heating Equipment and Supplies (Hydronics) Merchant Wholesalers
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Quality Assurance Technician
NEXT STEPS
Primo Water
Ontario, CA
June 2nd, 2026
Quality Control Analysts
Bottled Water Manufacturing
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Operator, Anodizing Waste Treatment 1
NEXT STEPS
Samuel Son Usa
Fontana, CA
June 25th, 2026
Water and Wastewater Treatment Plant and System Operators
Sewage Treatment Facilities
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Operator, Anodizing Waste Treatment 1
NEXT STEPS
Samuel Son
Fontana, CA
June 26th, 2026
Water and Wastewater Treatment Plant and System Operators
Sewage Treatment Facilities
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Operator, Anodizing Waste Treatment 1
NEXT STEPS
Samuel Son Company
Fontana, CA
June 24th, 2026
Water and Wastewater Treatment Plant and System Operators
Sewage Treatment Facilities
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CAD Designer, Water
NEXT STEPS
Ty Lin International
Ontario, CA
June 11th, 2026
Water/Wastewater Engineers
Engineering Services
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