This page is for  Ansonia/Valley Office (Former BUI) Customers Ansonia/Valley Office Area Towns (Former BUI Customers):
Ansonia, Derby, and Seymour.

New Haven Area Customers New Haven Office Area Towns: Bethany, Branford, Cheshire, East Haven, Hamden, Milford, New Haven, North Branford, North Haven, Orange, West Haven, Woodbridge. Link to How to Pay Your Bill Here

Pay By Mail

For the price of a stamp, you can mail your payment in the handy return envelope that comes with your quarterly bill. When you pay your bill by mail, you can help us process your payment accurately and quickly by following these steps:

Don’t staple, tape or attach anything to your bill.

Don’t send cash. Money can be lost or stolen in the mail. Make your check payable to the Regional Water Authority. Avoid initials and abbreviations. Instead be sure to write the company’s entire name on the check and note your account number in the memo section of the check.

Include both the payment and bill stub in the return envelope.

Mail payments to:
Regional Water Authority
P.O. Box 981018
Boston, MA 02298-1018

Pay In Person

Payments can be made at Seccombe’s at 171 Main Street in Ansonia, or at our office on 90 Sargent Drive in New Haven.

Pay by Phone:

Many area banks offer a pay-by-phone option for paying all your bills, including your water bill. Check with your financial institution for pay-by-phone details.

For your convenience, we accept payment using a Visa or MasterCard credit card. To make a payment on your account, please call our customer service department at 203-562-4020 between the hours of 8 a.m. and 6 p.m.

Need Information Fast?

Need information fast? Customer service handles calls from 8 a.m. to 6 p.m. Monday through Friday. Please call 203-562-4020. Press the number 1 on your telephone if you are a former BUI customer to be connected to Customer Service.