310 CMR 27.00 regulates the underground injection of fluids that have the potential to contaminate groundwater.

310 CMR 27.00: Underground Injection Control  pdf format of 310 CMR 27.00: Underground Injection Control

These regulations were last amended in September 2016.

310 CMR 27.00 Email for questions: ask.UIC@state.ma.us

310 CMR 27.00: Proposed Amendments & Public Comment

  • There are no proposed regulations out for public comment at this time.

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Information Applicable to All UIC Filings

UIC Forms - Filing with eDEP

Additional UIC Forms

  • UIC Class V Well - Completion of Construction Notification Form

    Discharges to UIC Class V well(s) cannot begin until this form has been submitted to MassDEP and approval is received to begin discharging to the well(s). If your original BRP WS 06 UIC registration application was filed through eDEP then you should not be using this downloadable form but instead you should complete and file the same form that is available through your eDEP account.

  • UIC Class V Well Post-Closure Notification Form

    This form must be filed upon closure of a UIC Class V well. If your original BRP WS 06 UIC registration application was filed through eDEP then you should not be using this downloadable form but instead you should complete and file the same form that is available through your eDEP account.

  • Notice of Plumbing Inspector Approval to Seal Floor Drain  doc format of WS1 Notice of Plumbing Insp. Approval to Seal Drain
pdf format of                             WS1 Notice of Plumbing Insp. Approval to Seal Drain

    A plumbing inspector must approve any sealing of a floor drain, and this notice must be filed with MassDEP and the local Board of Health.

  • Underground Injection Control Technical Compliance Forms

    The applicable UIC Class V Well Technical Compliance Form and Certification Statement should be completed and attached to your eDEP BRP WS 06 UIC Registration application form. These forms are used by MassDEP and the applicant to determine whether a UIC registration for a proposed discharge may be approved. Technical compliance forms are not required if you are registering an existing UIC well for the purpose of closing the well. November 2016.

Well Registration Application Forms

  • All UIC registration applications for proposed new UIC wells or existing UIC wells that are not currently registered shall be registered through MassDEP’s electronic filing system, eDEP , with the exception of registration applications for closed-loop geothermal wells.  The closure of any UIC well that was registered through the previously accepted paper application process shall require the submittal of the BRP WS 06d Pre-Closure application form provided below.  The closure of any UIC well that was originally registered through the eDEP filing system shall require the submittal of the eDEP version of the BRP WS 06d Pre-Closure application.

    Any person or entity seeking to modify an existing UIC registration, or provide updated information such as change of ownership and/or contact information, shall contact the MassDEP UIC registration program to discuss MassDEP’s submittal information requirements.

  • UIC Application for Closed-Loop Ground Source Heat Pump Well

    This registration applies to any party that has discharged, or is discharging, to a Class V closed-loop or direct exchange well as defined in the Underground Injection Control Regulations.

  • BRP WS 06d - Pre-Closure of a Previously Registered UIC Well

    Pre-Closure of any UIC Class V well for which a MassDEP UIC Registration Number was previously issued. Revised August 2013.

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