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    Summer 2027 Environmental Engineering internships in Illinois

    As of November 11, 2026, Intern Insider listed 36 open Summer 2027 environmental engineering internships in Illinois, from 28 companies. Employers include HNTB, Ecolab and Gresham Smith. 36 listings state that the role is paid. This page does not invent a salary when the listing is silent. Browse the roles by employer below. You can read the full posting free, then apply in minutes with a free account.
    36 open roles · 28 companies · 2 added this week
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    HNTB logoHNTB5 open

    Ecolab logoEcolab2 open

    Gresham Smith logoGresham Smith2 open

    HR Green, Inc. logoHR Green, Inc.2 open

    V3 Companies logoV3 Companies2 open

    AmerisourceBergen logoAmerisourceBergen1 open

    Anning-Johnson Company logoAnning-Johnson Company1 open

    Arcadis logoArcadis1 open

    Argonne National Laboratory logoArgonne National Laboratory1 open

    Caterpillar Inc. logoCaterpillar Inc.1 open

    Encore logoEncore1 open

    F.H. Paschen logoF.H. Paschen1 open

    GE HealthCare logoGE HealthCare1 open

    GROWMARK, Inc. logoGROWMARK, Inc.1 open

    Langan Engineering & Environmental Services logoLangan Engineering & Environmental Services1 open

    Lockwood, Andrews & Newnam, Inc. (LAN) logoLockwood, Andrews & Newnam, Inc. (LAN)1 open

    Mackie Consultants, LLC logoMackie Consultants, LLC1 open

    Marathon Petroleum Corporation logoMarathon Petroleum Corporation1 open

    Michaels Energy- an Inc. 5000 Company logoMichaels Energy- an Inc. 5000 Company1 open

    Parametrix logoParametrix1 open

    Pattern Energy logoPattern Energy1 open

    Procter & Gamble logoProcter & Gamble1 open

    Sidara logoSidara1 open

    Skidmore, Owings & Merrill (SOM) logoSkidmore, Owings & Merrill (SOM)1 open

    TPG logoTPG1 open

    Turner Construction Company logoTurner Construction Company1 open

    Veolia logoVeolia1 open

    WSP logoWSP1 open

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    As of November 11, 2026, Intern Insider listed 36 open Summer 2027 environmental engineering internships in Illinois, from 28 companies.

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