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9.18.25
12:30 pm
Customer Service

We are addressing an issue with credit card payments in our "Quick Pay" one-time payment system. To make a credit card payment, please log into your MyUnitil account or use our automated phone system.

How do I pay my bill by mail?

To mail in a payment, please address it to:

Unitil
P.O. Box 981077
Boston, MA 02298-1077