Water Treatment Plant Operator - Mayport

POSITION SUMMARY Amentum, a global leader in critical mission support, engineering, technology, and national security solutions, is seeking a Water Treatment Plant Operator to support a government contract based in Jacksonville, Florida at Mayport. POSITION SUMMARY Performs duties described in the Service Contract Act Service Order Water Treatment Plant Operator. May perform duties of other classifications that have a pay rate equal to or lower than the employee’s current rate. DUTIES / ESSENTIAL FUNCTIONS 25210 WATER TREATMENT PLANT OPERATOR description from the Service Contract Act (SCA) Dictionary of Occupations (DOT): Controls treatment plant machines and equipment to purify and clarify water for human consumption and for industrial use. Operates and controls electric motors, pumps, and valves to regulate flow of raw water into treating plant. Dumps specified amounts of chemicals, such as chlorine, ammonia, and lime into water or adjusts automatic devices that admit specified amounts of chemicals into tanks to disinfect, deodorize, and clarify water. Starts agitators to mix chemicals and allows impurities to settle to bottom of tank. Turns valves to regulate water through filter beds to remove impurities. Pumps purified water into water mains. Monitors panel board and adjusts controls to regulator flow rates, loss of head pressure and water elevation and distribution of water. Cleans tanks and filter beds, using backwashing (reverse flow of water). Repairs and lubricates machines and equipment, using hand and power tools. Tests water samples to determine acidity, color, and impuritif's, using calorimeter, turbidimeter, and conductivity meter. Dumps chemicals such as alum into tanks to coagulate impurities and reduce acidity. Records data, such as residual content of chemicals, water turbidity, and water pressure. Duties specific to this job at this location, if different from SCA description: Marginal Functions: 1) May operate portable water-purification plant to supply drinking water. 2) May purify waste water from plant preparatory to pumping water into rivers and streams or city mains. 3) Performs other duties as requested QUALIFICATIONS / EDUCATION / EXPERIENCE High School Diploma or equivalent. Two (2) years advanced education or equivalent specialized training preferred. Two (2) years of journeyman level experience in this trade. Ability to use hand and power tools required to perform job duties. Ability to successfully pass any background checks and/or drug testing required on the contract. Must be able to obtain and maintain facility credentials/authorization. Note: US Citizenship is required for facility credentials/authorization at this work location. CERTIFICATE, LICENSE, REGISTRATION: Class “C” State of Florida D.E.P. Water Operator License or Better Compensation Details: $37.80 Original Posting: 06/04/2026 - Until Filled Amentum anticipates this job requisition will remain open for at least three days, with a closing date no earlier than three days after the original posting. This timeline may change based on business needs. Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed, marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low-income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law. Learn more about your rights under Federal laws and supplemental language at Labor Laws Posters. Welcome back! We encourage you to check on the status of your current job applications with us. You can also search for a list of our current job openings and see if there are any new positions that might be a good fit for you. Thank you for continued interest in employment with Amentum. For more than 100 years, Amentum has tackled the world’s toughest challenges to deliver agile and steadfast solutions to the U.S. government and its allies. With more than 50,000 employees on all seven continents and in more than 60 countries, Amentum delivers a broad range of operational support services to meet the critical needs of our clients. Our headquarters are in Chantilly, VA. Find us online at If you need a reasonable accommodation for any part of the employment process, please contact us by email at View email address on click.appcast.io and let us know the nature of your request and your contact information. Requests for accommodation will be considered on a case-by-case basis. 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