Alternative channels
Mail, text, and in-person payment instructions
Pay by text
Green Bay's FAQ says customers may enroll in Pay by Text while making an online payment or from the account's Pay by Text option. Bill notifications are sent by text in addition to email; after confirmation, the customer can reply to pay with the default payment method. The current page does not publish a keyword or shortcode, so enrollment should be completed from the authenticated e-Care/InvoiceCloud account.
Mail-in address
Green Bay Water Utility, P.O. Box 1210, Green Bay, WI 54305-1210. Include the payment stub/account number and allow normal mail processing time.
Counters, drop boxes, and office hours
Green Bay Water, 631 South Adams Street, Green Bay, Wisconsin 54301. Office hours are Monday-Thursday 7:00 a.m.-4:30 p.m. and Friday 7:00 a.m.-11:00 a.m.; the drive-up window/drop box is available for after-hours drop-off. The utility's public page identifies online, phone, mail and automatic-bank-draft methods but does not publish a complete counter cash/card acceptance list.