Salary: $40.00 Hourly
Location : 5019 Imhoff Place, Martinez, CA
Job Type: Temporary
Job Number: 2026INT_ENG.2
Department: Engineering and Technical Services Department
Opening Date: 09/22/2026
Closing Date: 10/9/2026 5:00 PM Pacific

THE POSITION
SIX MONTH INTERNSHIPS

$40.00 per hour
Our internships are six-month commitments, typically beginning in January and July. Interns are expected to work on-site in Martinez, California, for 40 hours per week, Monday through Friday. To be eligible, candidates must be an enrolled college junior (60 or more semester units), senior, graduate student, or have graduated within the past 12 months, and must be eligible to work in the United States.
Engineering Internships

Development Services

This position will assist with various tasks associated with the design, permitting, and construction of sewers for new and infill land development. Typical work includes assisting the permit counter with administrative duties, processing of sewer service applications, and reviewing engineering plans submitted by developers, contractors, and/or consultants for conformance with Central San's standards and ordinances. Other duties include interacting with contractors and the public at both the Permit counter and in the field for construction projects; assisting the construction inspection group to ensure contractual compliance with plans, specifications, codes, and safety requirements, including checking cut sheets for line and grade; and verifying that materials being incorporated into a project are per specification. Applicants should be able to communicate effectively; learn to use industry-specific software; perform project-specific tasks; write clear, concise reports; assist personnel with fieldwork; work independently; and be self-motivated, patient, and respectful. Preferred qualifications: Pursuing a degree in environmental, civil, chemical, mechanical, or related engineering majors, and knowledge of computer spreadsheet development, word processing, and basic physics and chemistry.

Innovations and Efficiency

This position will assist with nutrient removal, odor control, secondary clarifier, and treatment plant preliminary design and planning projects. Typical work includes engineering support for data collection, reviewing past project drawings and technical reports, conducting literature reviews, developing presentations, and performing data analysis. Candidates should have knowledge of spreadsheet development, word processing, and fundamental physics and chemistry; be able to organize work assignments and learn to use industry-specific software; design and perform project-specific tasks; write clear, concise reports; assist personnel with fieldwork; work independently; and be self-motivated, patient, and respectful. Preferred qualifications: Pursuing a degree in environmental, civil, chemical, or mechanical engineering.

Recycled Water

This position will assist with Central San's commercial, residential, and recycled water distribution programs, including planning and evaluating recycled water projects. Typical work includes routine customer interaction; assisting with the operation and maintenance of the recycled water distribution system; providing engineering support; interdepartmental coordination; report writing; literature review; internet research; recycled water usage tracking and billing; regulatory tracking; and assisting with the development of program guidelines, documents, and manuals.Applicants may work on tasks or assignments related to collection system or treatment plant projects as needed. Candidates should be able to organize work assignments; learn to use industry-specific software; design and perform project-specific tasks; write clear, concise reports; assist personnel with fieldwork; work independently; and be self-motivated, patient, and respectful. Preferred qualifications: Pursuing a degree in environmental, civil, chemical, mechanical, or related engineering majors, and knowledge of computer spreadsheet development, word processing, and fundamental physics and chemistry.

Survey Support Section

This position is seeking civil engineering majors to assist the Capital Projects Division with design and construction projects. The position supports the Collection System Group sewer renovation program, Treatment Plant Group, Right-of-Way, and development review projects. Duties will include performing both office and field land surveying. Typical work includes managing small consulting tasks, calculating survey maps, using CAD systems, planning and researching projects, reviewing plans and land records, reviewing legal descriptions and plats, assisting with CAD drafting, and assisting with GPS and conventional surveys. Preferred qualifications: Completion of a survey course.

Collection System Program

This position seeks environmental, civil, mechanical, or related engineering majors to assist with collection system design and construction projects. This position will work with engineering and survey staff to replace and improve critical infrastructure in surrounding cities, using open-cut installation and trenchless technologies such as cured-in-place lining, pipe bursting, and horizontal directional drilling. Typical work includes determining and verifying field conditions; performing engineering calculations and data analysis; conducting field surveys; researching equipment and construction methods; preparing design details for project drawings; and assisting design and construction management teams. Projects currently under design and construction involve the replacement and rehabilitation of sewer pipelines, maintenance access hole structures, and various improvements in the collection system and pumping stations.

Treatment Plant Program

This position seeks environmental, civil, chemical, mechanical, or related engineering majors to assist the Capital Projects Treatment Plant Group in treatment plant design and construction projects. This position will work with engineering and treatment plant operations staff to replace and improve critical infrastructure in an active wastewater treatment plant. Typical work includes determining and verifying field conditions; performing engineering calculations and data analysis; conducting field surveys; researching equipment and construction methods; preparing design details for project drawings; and assisting design and construction management teams.?Projects currently underway include process, structural, and mechanical system rehabilitation; solids handling facilities planning and design; equipment and piping rehabilitation; energy management; recycled water; safety enhancements; electrical instrumentation and controls upgrades; fire and security alarm systems; and similar projects.
SELECTION PROCEDURE
Interested students can Applicants must attach a cover letter, resume, and unofficial/unlocked copy of transcript(s) to their application to be considered for the program.

Questions about our internship program or the application process can be directed to
Temporary employees are not eligible for District benefits. Five days of California state mandated sick leave will be provided annually.