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Treatment Works Approvals (TWAs)

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Treatment Works Approvals

sewer_trenchThe Treatment Works Approval (TWA) program regulates the construction and operation of industrial and domestic wastewater collection, conveyance and treatment facilities, including treatment plants, pumping stations, interceptors, sewer mains and other collection, holding and conveyance systems. TWA permits are issued after a facility has obtained a NJPDES permit and ensures that that the construction and operation of the treatment works complies with the effluent standards specified in the NJPDES permit. The Treatment Works Approval process also involves assessing the design of new sewer lines and other wastewater conveyance facilities (force mains, pumping stations, etc.) as well as evaluating downstream conveyance and treatment capacity.

The administrative and technical requirements of the TWA program are stipulated in N.J.A.C. 7:14A-22 and 23, respectively.

IMPORTANT NOTE: The Expedited TWA program is no longer offered.

The submission of an administratively complete application is essential for the timely processing of all TWA applications. Links to the application forms and checklists, as well as common TWA application deficiencies, are provided below. Complete applications, with original signatures and P.E. seals (raised), must be mailed to:

    Mail Code: 401-02B
    NJDEP - Division of Water Quality
    Bureau of Ground Water, Residuals and Permit Administration (BGRPA)
    Permit Administration Section (PAS)
    PO Box 420
    Trenton, NJ 08625-0420

TWA Permitting Information

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If you have technical questions regarding Treatment Works Approval permits, please contact the Bureau of Environmental, Engineering and Permitting (BEEP).

If you have questions regarding the administrative status of a TWA permit application, please contact the Permit Administration Section (PAS) of the Bureau of Ground Water, Residuals, and Permit Administration.

 

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Last Updated: August 2, 2022

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