WP 66a, 66b: Title 5 Large System Upgrades

Use this approval for upgrades of large septic systems and review for consistency with Title 5.

Septic Systems / Title 5 Contact Information

The Details of WP 66a, 66b: Title 5 Large System Upgrades

What you need for WP 66a, 66b: Title 5 Large System Upgrades

These permits ensure that large septic systems perform appropriately.

You must apply for these approvals:

  • If you want to upgrade a system with a design flow of more than 10,000 but less than 15,000 gallons per day (WP 66a)
  • If MassDEP determines that a system or proposed system requires agency review to ensure consistency with Title 5 (WP 66b)

 

 

How to apply WP 66a, 66b: Title 5 Large System Upgrades

File online via the EEA ePlace Portal. See details below.

Next steps for WP 66a, 66b: Title 5 Large System Upgrades

  1. Review the Instructions

  2. Complete the Application Form

    Please fill out and save the Microsoft Word or Acrobat Adobe PDF form on your computer.

    Important Note: Even when applying online, you will still need to complete a conventional Application Form and upload it as an attachment during the online filing process. Please do not mail in these forms.

  3. Submit your Application and Fee Payment

    • File online via the EEA ePlace Portal.
    • You will have the option to pay online by credit card or automated clearing house (ACH) or pay by mail. If you select the pay-by-mail option, instructions on how to do so will be provided when you submit your online application.

Contact for WP 66a, 66b: Title 5 Large System Upgrades

Phone

Open M-F 7:30 am-5:00 pm, with the exception of all Commonwealth & Federally observed holidays.

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