[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8},"actionData","errors","routes/ssr/_anon-layout",{"_225":226,"_227":228,"_229":-5,"_230":231,"_232":233,"_234":235,"_236":237},"browse-city",{"_9":10,"_11":12,"_13":14,"_15":16,"_17":18,"_19":20,"_21":22,"_23":24,"_25":26,"_27":28,"_29":30,"_31":32},"careerAreaSlug","engineering","careerAreaName","Engineering","occupationSlug","water-or-wastewater-engineer","occupationName","Water / Wastewater Engineer","stateSlug","id","stateName","Idaho","citySlug","lewiston","cityName","Lewiston","jobs",[208],"gone",false,"selectedJobDetail",{"_18":36,"_37":38,"_39":40,"_41":42,"_43":44,"_45":46,"_47":48,"_49":50,"_51":52,"_23":53,"_19":20,"_54":55,"_56":57,"_58":59,"_60":61,"_62":63,"_64":65,"_66":67,"_68":28,"_69":55,"_70":55,"_71":28,"_72":28,"_73":74,"_75":76,"_77":78,"_79":28,"_80":28,"_81":82,"_83":84,"_85":86,"_87":88,"_89":90,"_91":92,"_93":94,"_95":96,"_97":98,"_99":100,"_101":102,"_103":104,"_105":28,"_106":107,"_108":109,"_21":22,"_17":18,"_13":14,"_110":111,"_9":112,"_113":114,"_115":116,"_117":118,"_119":120,"_121":122,"_123":124,"_125":55,"_126":36,"_127":38,"_128":111,"_129":130,"_131":132,"_133":134},"selectedJobCompanyDetails",{"_33":34,"_35":34},"profileURL","","CompanyName","f2fa65e7d7b8a5615c91f1c656aede8e5167ba5c","slug","waterwastewater-process-engin-f2fa65e7","title","Water/Wastewater Process Engineer III","body","Water/Wastewater Process Engineer III Merrick & Company paid time off United States, Idaho, Lewiston 504 Main Street (Show on map) Jul 31, 2026\nOVERVIEW Are you ready to lead transformative water infrastructure projects that serve communities and protect vital resources? Merrick is seeking a Water/Wastewater ProcessEngineerto join our growing Water Group in Colorado, Idaho, or Texas. This is your opportunity to work on innovative water, wastewater, and reuse systems that make a real difference. Local/regional candidates preferred (hybrid schedule). Remote candidates will be considered if they are willing to travel to client sites and local offices 2x per month. Why Join Us? Work on cutting-edge water resource projectsthat shape the future of infrastructure.\nCollaborate with a passionate team dedicated to community, sustainability, and recreation.\nEnjoy professional growthin a mid-sized, employee-owned firm that values technical excellence and work-life balance.\nBe part of a network of 120+ water professionals committed to engineering excellence and stewardship.

WHAT YOU'LL DO

Design water and wastewater treatment facilities, including advanced treatment/nutrient removal and reuse, distribution and conveyance, and related infrastructure balance of plant.\nPrepare and review design drawings, details, layouts, specifications, cost estimates, studies, reports and work products to include review of designs by others for standard conformance.\nProvide construction support and oversight including administration, limited inspection, start-up, commissioning, operations, and maintenance. Some travel may be required.\nInterface with project team including stakeholders, clients, equipment suppliers/vendors, and Local, State, and Federal government agencies.\nProvide clear written and verbalcommunications for internal/external project meetings, project presentations, and all deliverables.

REQUIRED QUALIFICATIONS

Bachelor's degree in Civil, Chemical, Mechanical, or Environmental Engineering from an A.B.E.T. Accredited School.\nMinimum eight (8) years of experience in design, construction oversight, and operation of water and/or wastewater infrastructure facilities and projects.\nMust be eligible to work in the United States without sponsorship.\nP.E. (Professional Engineer) License or the ability to obtain within 6 months of employment.

DESIRED QUALIFICATIONS

Master's degree in Civil, Chemical, Mechanical or Environmental Engineering from an A.B.E.T. Accredited School.\nExperience with:\nHydraulic modeling (PIPE-FLO, WaterCAD, Fathom, other).\nWastewater biological modeling (Biowin, GPSx, Sumo, other).\nIndustrial water and wastewater treatment.\nDesign Team and Project management.\nAlternative delivery methods.

TOTAL REWARDS & EMPLOYEE PROGRAMS

Employee Ownership

All eligible U.S. employees participate in our Employee Stock Ownership Plan (ESOP), sharing in the company's success.\nComprehensive Compensation & Benefits
Merrick & Company offers a competitive compensation and benefits package including health insurance, dental and vision coverage, and paid time off (PTO).\nRobust Referral Program
Earn incentives for referring top talent to join our team.\nPerformance Reviews
Annual reviews to recognize contributions and support career growth.\nProfessional Development
Access to ongoing training and development opportunities to build your skills and advance your career.\nEmployee Recognition
Formal programs to celebrate achievements and outstanding performance.\nPeer Mentor Program
Get support and guidance through structured mentorship opportunities.\nAnd More
Additional programs and benefits designed to support your success and well-being.

ADDITIONAL INFORMATION

Apply online only. No e-mail, hard copy or third-party resumes accepted.\nAt Merrick, every resume is carefully reviewed by our team of experienced human recruiters-never by AI. 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Find & Apply For Water / Wastewater Engineer Jobs in Lewiston, Idaho

Water/Wastewater Process Engineer III